Hackers have launched more than 240,000 exploit attempts against a WordPress Core vulnerability that can allow attackers to run malicious code without logging in. According to the supplied Wordfence report, attacks began on October 28, 2026, the same day WordPress released a security update addressing the flaw.

Tracked as CVE-2026-119977, the vulnerability carries a high severity CVSS score of 8.1. It affects unpatched WordPress branches from 4.7 through 7.1.3. Researcher Umut Bayram reported the weakness, which involves predictable, publicly accessible folders created during full WordPress Core upgrades.

WordPress addressed the issue in its October 28 security release, alongside several other security fixes. Older branches also received backported patches. Cybersecuritynews.com’s earlier coverage of WordPress 7.1.4 security fixes explained how the update changes temporary folder handling to reduce exposure during upgrades.

240,000 WordPress Exploit Attempts

During a full upgrade, WordPress extracts installation files into a temporary folder beneath /wp-content/upgrade/. On vulnerable installations, predictable folder names can let attackers find this separate installer through a web request while the update remains in progress. No existing WordPress account or user interaction is required.

The attack depends on a race condition, meaning the attacker must reach those files at the right moment. The temporary installer must remain accessible long enough to complete the attack before cleanup removes it. This timing requirement makes successful exploitation difficult, even when attackers repeatedly probe known paths.

The official WordPress release announcement confirms that the upgrade weakness can lead to remote code execution. The CVE record classifies it as a time-of-check, time-of-use race condition, with high potential impact on data confidentiality, integrity, and availability.

According to the supplied Wordfence analysis, attackers reaching the exposed installer could complete a staged installation, create an administrator account, and upload malicious PHP code. That access could support backdoors, content changes, or data theft. Observed requests targeted installer files inside predictable upgrade directories.

Wordfence’s supplied figures show attack traffic peaked on October 30, when its firewall blocked more than 74,000 requests. Activity was highest between October 29 and November 1. These figures describe blocked requests, not confirmed infections, successful code execution, or the number of individual websites affected.

Earlier reporting on 60,000 WordPress attack attempts made the same distinction. Repeated automated requests can increase the chance of finding an exposed installer, but request totals alone cannot establish whether attackers completed the required steps or gained lasting access.

Administrators should install WordPress 7.1.4 or the corresponding patched release for their branch. Automatic background updates may have installed the fix, but owners should verify completion. WordPress recommends immediate updating and notes that only its latest release receives active support.

Updating from a vulnerable version still uses its existing upgrade process once. The supplied Wordfence guidance recommends blocking public access to PHP files beneath /wp-content/upgrade/ before updating. Its protection requires Extended Protection mode because staged PHP files run outside normal WordPress loading.

Indicators of Compromise

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A flaw in ChatGPT let attackers slip past Lockdown Mode, the safety setting meant to stop data leaks. Check Point Research found that a hidden pop-up trick could copy a user’s full chat history, show fake windows, and push malware. In the ChatGPT Classic desktop app, simply chatting was enough to trigger the leak. OpenAI has fixed the bug.

OpenAI launched Lockdown Mode on February 13, 2026, first for business plans. On June 4, it reached personal accounts, where users can turn it on under Settings > Security. The setting limits web browsing to cached pages and turns off live web access, image support in replies, Deep Research, Agent Mode, Canvas networking, live connectors, and file downloads.

OpenAI says it is built for high-risk users, such as executives and security teams, and is not needed by most people. Our earlier story on the ChatGPT Lockdown Mode release covers the basics.

The goal is to stop prompt injection, where hidden text tricks the AI into following an attacker’s orders. A common trick is to make the AI load a link like attacker.example/collect?data= followed by private details. The data then shows up in the attacker’s server logs and the chat looks normal.

ChatGPT Lockdown Mode Bypass

This is not the first hidden exit path Check Point has found. In March, the team showed that DNS tunneling in ChatGPT’s code runtime could send chat data to an outside server. We covered that bug in ChatGPT Vulnerability Let Attackers Silently Exfiltrate User Prompts. The new flaw shows how closing one path does not protect the others.

In February 2026, OpenAI added an HTML preview to ChatGPT code blocks, so users can view a page right in the chat. That page runs inside two nested iframes, which are small boxed-in web pages. The box blocks outside images, scripts, and links, and it asks the user before anything leaves.

Researcher Alexey Bukhteyev spotted a weak point. The boxes allowed popups through two settings, allow-popups and allow-popups-to-escape-sandbox. ChatGPT guarded popups by swapping out the window.open function. A page could skip that guard by adding one more iframe and calling that iframe’s own window.open.

The popup then opened with no prompt, even in Lockdown Mode. Since the second setting was on, code in the popup ran outside the box.

The first risk was fake update windows. The popup kept the ChatGPT icon, while the attacker chose the title. That made a malware download look like a real app update. In a browser, downloads are not blocked, so a shared chat link was enough, and the victim did not even need an account. In the desktop app, the user still had to click the download link.

The second risk was silent data theft. In ChatGPT Classic, built on Electron, window.open worked without any user click. A malicious prompt, a malicious custom GPT, or a shared chat could then send the whole conversation, and uploaded files, to the attacker’s server.

The third risk was stolen logins. The team also reloaded the main ChatGPT window and signed the user out. A fake login page could then capture the password when the user signed back in.

Check Point reported the problem to OpenAI. On September 18, 2026, OpenAI said it removed both popup permissions from the outer preview iframe. Check Point retested and confirmed the trick no longer works. Check Point published its report on November 5.

No user action is needed for this specific bug, but a few habits lower the risk of similar ones. Do not click buttons, previews, or “update” prompts inside shared chats. Skip prompts copied from unknown sites and avoid custom GPTs from unknown builders.

Check the address bar or sign-in page before typing a password, especially after an unexpected logout. Keep the desktop app updated, and avoid pasting medical, financial, or work secrets into any chat unless needed.

Even OpenAI says its safeguards reduce risk but give no full guarantee. As AI tools run code and show web content, each new feature adds a new way in. Careful habits remain a necessary layer of protection.

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Microsoft’s Windows Paint vulnerability, CVE-2026-83844, could allow an unauthenticated attacker to execute code over a network without user interaction.

The flaw carries a CVSS score of 8.1, placing it in the High severity category rather than Critical. However, confusion over the corrected Paint version has complicated patch checks for Windows administrators.

The vulnerability stems from an out-of-bounds read, a memory error in which software reads beyond its intended boundary.

Microsoft published the advisory on October 13, 2026. Its assessment lists a network attack vector, no required privileges, and high attack complexity, meaning successful exploitation depends on conditions that make an attack harder to carry out.

Windows 0-Click Paint RCE Vulnerability

The disclosure formed part of the October update cycle, covered in Cybersecurity News’ Microsoft October Patch Tuesday report. For administrators, the immediate concern is not simply whether an update exists, but whether the corrected application build has actually reached managed devices.

Microsoft initially listed Paint version 11.2605.91.0 as the fixed release. Administrators reported that Microsoft Store continued offering 11.2605.81.0, even after update checks and Store cache resets.

Microsoft’s advisory listed 11.2609.401.0 as the fix, suggesting the earlier version reference may have been incorrect. Microsoft has not confirmed that explanation.

Update availability also appears inconsistent. Some administrators reported difficulty obtaining a corrected build, while one participant in the Reddit discussion said the update had become available through Microsoft Store. These individual reports do not establish a universal rollout status. Claims that availability depends on region also remain unverified.

A crafted image could trigger the flaw, but Microsoft’s quoted guidance describes a crafted network packet sent to an affected service. The Hacker News discussion highlights the missing detail: neither the exposed service nor the complete attack path is identified. Suggestions involving Copilot or other components are speculation.

Administrators should check the installed Paint version rather than trust an “up to date” message alone. Neowin recommends following Microsoft’s current advisory and considering temporary removal where Paint is unnecessary. Restricting untrusted images may reduce general exposure, but it is not a confirmed fix for this specific network attack path.

Cybersecurity News’ separate PNG vulnerability coverage provides related context on image software security. Those flaws are separate from this Paint vulnerability.

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Citrix has released security updates for XenServer versions 8.4 and 9 to address a critical vulnerability. This flaw could allow an unauthenticated attacker on the management network to compromise virtualization hosts. The Cloud Software Group published a bulletin (CTX697256) on November 3, 2026, classifying the issue as Critical. The bulletin covers nine CVEs. Citrix XenServer […]

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Airbyte vulnerability exploited in the wild lets users run code in Connector Builder containers. Upgrade self-managed Airbyte to 2.2.0 now.

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A flaw in Zyxel GS1900 switches was already being used by hackers, and the patch meant to fix it did not work. Researchers at Binarly found that a public exploit hit a different bug than the one Zyxel had patched. Zyxel has now confirmed it as a new flaw, tracked as CVE-2026-107441.

Zyxel published its fix for CVE-2026-7273 on June 16, 2026. After GreyNoise reported real attacks in September, Binarly tested all ten fixed firmware releases on September 28 and found every one still open. Zyxel confirmed the new bug on October 11, shipped a fix on October 22, and published its advisory on November 3.

The flaw sits in the dispatcher.cgi web program. It carries a 9.8 critical score, and an attacker can run commands as root without logging in. The same weak code also exists in httprestorecfg.cgi and httpupload.cgi.

Zyxel GS1900 Zero-Day Exploited

The switch web page stores request parameters in a fixed memory block of 140 slots. Each slot holds 1,024 bytes. The code copies the data first and checks the count afterward. A long value in slot 139 spills over and overwrites the counter itself.

An attacker can set the counter to a negative number and write to memory before the block. This lets them overwrite function pointers and run their own commands. Zyxel’s patch added a count check, but the bad copy still happens before that check runs.

Binarly also says Zyxel described the bug wrongly. The flaw lives in global memory, not on the stack. It also works over normal HTTP from any network that can reach the switch, so Binarly rates it higher than the 8.8 score Zyxel gave.

GreyNoise says one actor hit 996 GS1900 switches in 48 countries around August 17. The actor stole device settings, hashed root passwords, and network details. A total of 564 of those switches still used factory default logins. Italy, the United States, and Taiwan had the most victims.

The exploit was a Python script hidden with PyArmor. It pulled a collector script from the attacker’s server using TFTP, then copied the stolen data to a web-readable folder. GreyNoise ties the actor to the Gitea campaign that Acronis called Red Heron, based on shared servers and malware.

That campaign used JITTERLY, a Linux backdoor with more than 30 commands. It hides a rootkit called SIXZUT inside itself, which can conceal files, processes, and network links. Binarly found its samples while checking this server for Binarly Transparency Platform detections.

CISA added CVE-2026-7273 to its Known Exploited Vulnerabilities list on September 21. Our earlier report on the CISA warning for Zyxel GS1900 switches covers that step. Binarly now says either Zyxel’s first patch was wrong, or the attacks hit a different bug than CISA named. Either way, the flaw in Binarly’s advisory is present in the ten releases sold as fixes.

The same actor also broke into WordPress sites, as our story on hackers exploiting WordPress flaws to steal government records shows. GreyNoise counted more than 18,000 stolen records in one case.

Update every GS1900 switch to the October 22 fix or newer from Zyxel. Take web management pages off the internet and limit them to trusted admin networks. Change all default passwords right away.

CISA also tells teams to check devices for odd admin activity, changed settings, and strange web requests. Because attackers took hashed root credentials, treat any exposed switch as possibly stolen and rotate its passwords.

Indicators of Compromise

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Google has released its November 2026 Android security update, addressing more than 200 vulnerabilities across the operating system, kernel, and hardware components.

Published on November 2, the bulletin includes critical remote code execution flaws that require no user interaction. Devices with security patch level 2026-11-05 or later receive all applicable fixes.

The most serious Framework issue, CVE-2026-58868, could allow remote code execution without additional execution privileges. Google lists fixes for Android 14, 15, 16, 16 QPR2, and 17. The lack of required user interaction makes this a zero-click threat, removing the need to persuade someone to open malicious content.

Two other critical remote code execution vulnerabilities, CVE-2026-58876 and CVE-2026-58936, affect the System component across those same Android releases.

Google describes the most severe System issue as requiring neither additional privileges nor user interaction. However, the bulletin does not provide enough technical detail to establish the precise delivery method for each flaw.

These findings follow earlier Android updates addressing remote attack risks, including the September 2026 Android security update. The November bulletin does not state that its newly listed flaws are being exploited. A zero-click vulnerability describes the interaction required for an attack, not proof that attackers have already used it against users.

The update also covers high-severity information disclosure, privilege escalation, and denial-of-service bugs. Android runtime flaw CVE-2026-58988 could expose information locally without additional execution privileges or user interaction.

Other Framework and System entries could allow attackers to gain greater access, expose protected data, or interrupt services, depending on the specific vulnerability.

Android 0-Click Remote Code Execution Flaws

According to Google’s November Android Security Bulletin, the kernel fixes include critical issues affecting Bluetooth, Human Interface Device support, and protected Kernel-based Virtual Machine components.

Google says the most severe kernel vulnerability could enable remote privilege escalation without additional privileges or user interaction, making these fixes important alongside the platform patches.

Hardware coverage extends to Arm, Imagination Technologies, MediaTek, Unisoc, and Qualcomm components. MediaTek’s entries include eight critical modem vulnerabilities, while Qualcomm’s closed-source section contains another critical issue. These findings do not mean every Android phone contains every affected component. Exposure depends on the device’s hardware, software version, and the fixes supplied by its manufacturer.

The bulletin separates fixes into November 1 and November 5 patch levels. The earlier level covers the listed platform issues, while November 5 includes all applicable fixes from both groups and previous bulletins.

Cybersecurity News’ Android security patch guide explains why checking the patch date matters more than simply checking the Android version.

Users should install available manufacturer updates and check Google Play system updates separately. Google lists several affected Mainline components, including Media Codecs, MediaProvider, Telephonycore, and WiFi. Google’s update guidance explains how Pixel owners can check for software updates. Availability varies by device and carrier, so publication does not guarantee immediate delivery to every supported phone.

Google Play Protect remains useful, particularly for detecting harmful apps, but it does not replace operating system patches. Google’s severity ratings also assume platform protections are disabled or successfully bypassed, rather than guaranteeing exploitation on every device. For administrators, the practical priority is confirming supported devices receive the complete applicable November security update.

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What WordPress 7.1.4 Fixes Beyond the WordPress Vulnerability 

How the Vulnerability in WordPress Works 

Which Sites the WordPress Vulnerability Affects 

How Attackers Are Targeting the Vulnerability in WordPress 

How Serious Is This WordPress Vulnerability? 

What Comes Next for This Vulnerability in WordPress 

Google released its November 2026 Android Security Bulletin, which addresses critical vulnerabilities that could allow remote code execution without user interaction or additional execution privileges. Published on November 2, the bulletin highlights a framework vulnerability as the most severe issue and also documents other critical remote code execution flaws in Android’s system components. According to […]

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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has included a WordPress Core vulnerability in its Known Exploited Vulnerabilities catalog due to evidence of active exploitation. This vulnerability, identified as CVE-2026-119977, allows unauthenticated attackers to execute server-side code during a specific software upgrade window. CISA added this vulnerability to the catalog on November 3, 2026, […]

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Cloudflare launched Zero Wire, a public vulnerability intelligence hub that helps security teams investigate critical internet threats, assess exploitation evidence, and prioritize remediation efforts. Available through Cloudflare Radar, the service combines technical research, vendor guidance, and network observations into concise briefings. Cloudflare’s launch announcement positions the platform as a practical starting point for organizations facing […]

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A high-severity TeamViewer client vulnerability allows compromised remote machines to trigger memory corruption and execute arbitrary code on admin devices.

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The post TeamViewer Client Vulnerability Enables Remote Code Execution appeared first on Daily CyberSecurity.

Ubuntu has published fixes for CVE-2026-98432, a critical Linux kernel flaw in IPv4 TCP connection handling. It carries a CVSS 3.1 score of 9.8 and can lead to remote code execution. The fixes for Ubuntu 22.04 LTS and newer are in the -proposed pocket, so they are not yet in the default updates channel. Critical […]

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Attackers exploited the critical StyleSmuggler vulnerability in Magento and Adobe Commerce to deploy PSK Agent, a remote access trojan enabling command execution, traffic proxying, and persistent server access. The campaign ran September 9–13, 2026, targeting stores across Western Europe, North America, and Asia-Pacific. Imperva’s earlier analysis reports a CVSS score of 10.0 and exploitation preceding […]

The post Hackers Exploit Critical Magento StyleSmuggler Vulnerability to Deploy PSK Agent RAT and Hijack Servers appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.

Brotli vulnerability CVE-2026-111497 affected products list: fixes for Node.js, .NET, Envoy, PAN-OS and distros, plus VMware and others still unpatched.

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The post Brotli Vulnerability Affected Products: Vendor Patch Status List appeared first on Daily CyberSecurity.

A public proof-of-concept exploit for CVE-2023-21768 shows how attackers with local access can gain SYSTEM privileges through the Windows Ancillary Function Driver for WinSock.

Researchers Valentina Palmiotti, known as chompie, and Ruben Boonen published the code. Their complete exploit targets vulnerable Windows 11 22H2 systems.

The release concerns a vulnerability patched in January 2023, not a newly disclosed Windows flaw. IBM published the researchers’ technical analysis on March 21, 2023.

The vulnerability carries a CVSS score of 7.8 and requires low-level local privileges, with no user interaction. It does not provide a direct route into a computer over the internet. The flaw sits in afd.sys, a Windows kernel driver that handles requests from the WinSock networking interface.

According to IBM’s technical analysis, the researchers compared driver versions from December 2022 and January 2023 to understand Microsoft’s fix. Only one function, AfdNotifyRemoveIoCompletion, appeared to have changed, helping them narrow their investigation.

The older code failed to check a memory pointer supplied from a user application. That missing check let a local attacker write to kernel memory, where Windows stores sensitive system data.

Microsoft’s updated code added validation to ensure that pointers from user mode reference suitable user-space memory rather than protected kernel addresses.

POC for Windows WinSock Ancillary Vulnerability

The researchers said they diagnosed, reproduced, and turned the flaw into a working exploit in about one day, despite having no previous experience with this driver.

Their findings show how comparing patched and unpatched software can reveal enough detail to build an attack quickly.

The public GitHub repository describes the code as a demonstration. Its complete privilege escalation chain works on vulnerable Windows 11 22H2 installations, while the underlying memory-write capability works across vulnerable systems.

These are separate claims, and the repository does not promise full exploit compatibility with every affected Windows version. To move from a limited memory write to broader control, the exploit changes Windows I/O ring objects. These objects support queued input and output work.

The technique builds on research by Yarden Shafir and enables kernel memory reads and writes. The exploit then replaces a target process’s security token with one carrying SYSTEM privileges.

IBM also reported that 360 IceSword Lab found a different exploit in the wild in January 2023. That sample used the ProcessSocketNotifications interface rather than the researchers’ direct driver approach. This report does not establish that attackers used the published GitHub code.

Administrators should verify that affected devices received Microsoft’s fix or later applicable updates. IBM’s demonstration also worked without being blocked by HVCI, showing why that protection should not replace patching.

Related coverage includes CVE-2024-38193 exploitation and the CVE-2025-32709 WinSock zero-day. Both involve the same driver, but are separate flaws with different causes and patches.

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Synology NAS devices are facing C3RB3R ransomware attacks linked to 2024 security flaws, prompting the company to urge users to update outdated DiskStation Manager versions and packages.

The warning followed reports from the 360 Security Team and Solar Emergency Response Team on October 29. Victims found their files encrypted with the .L0CK3D extension and a ransom note named read-me3.txt.

Security teams provisionally identified the ransomware as C3RB3R. The available reporting does not establish how many devices have been compromised.

The Synology security advisory, tracked as Synology-SA-24:20, covers three vulnerabilities disclosed following Pwn2Own 2024. Published on November 5, 2024, it received several updates as fixes became available across DSM branches.

Although Appinn described the weaknesses as fixed by December 2024, Synology’s revision history shows that several patches arrived during November.

Cyber Security News previously examined the critical CVE-2024-10441 flaw in Synology DSM, which carries a CVSS score of 9.8 and allows unauthenticated remote code execution without user interaction.

Synology NAS Hit by C3RB3R Ransomware Attacks

The advisory also lists CVE-2024-50629, a webapi flaw that lets remote attackers read limited files, and CVE-2024-10445. This update certificate validation flaw lets an adjacent attacker write limited files. These carry scores of 5.3 and 4.3, respectively.

Public reporting has not established which individual vulnerability was used in each ransomware incident or whether attackers combined them.

Early coverage raised concerns because Solar reportedly investigated an affected device running DSM 7.4.1-90080 Update 1. At that stage, researchers were still examining the entry point and had not ruled out an unknown vulnerability.

The later report attributed Synology’s findings to older, patched weaknesses. The published accounts do not explain the apparent mismatch or confirm a new zero-day attack.

Synology NAS devices have faced ransomware threats before. Cyber Security News covered the Diskstation ransomware investigation, involving criminals who targeted Synology storage systems. That separate case provides background on the threat to NAS users. However, the available reports do not establish any connection to C3RB3R.

Synology’s advisory lists fixed releases including DSM 7.2.2-72806-1, 7.2.1-69057-6, 7.2-64570-4, 7.1.1-42962-7, and 6.2.4-25556-8. These are historical patch thresholds, not a recommendation to stop updating. Administrators should install the latest release supported by their NAS model and update official packages and third-party components.

Appinn’s initial incident report recommends removing direct internet access to DSM management and SSH, using a VPN for remote connections, and checking for unusual logins, unknown administrators, and scheduled tasks.

It also advises enabling two-factor authentication and keeping independent offline or off-site backups. For affected users, those separate backups may provide a route to recover encrypted files. Updating remains necessary, but it does not itself restore files already encrypted by ransomware.

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