Elevation of Privileges
New GPUThor attack defeats NVIDIA ECC protection for root access
A newly disclosed Rowhammer attack called GPUThor can bypass error-correcting code (ECC) protections on NVIDIA GPUs, enabling denial-of-service (DoS) and root-level privilege escalation. In a paper published by the University of Toronto, researchers say that GPUThor achieves far more practical bit-flip rates than past concepts like their own GPUHammer or GPUBreach, which became irrelevant after ECC was introduced. […]
CISA: Windows Task Host flaw now exploited by ransomware gangs
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has confirmed that ransomware gangs are also exploiting a high-severity Windows Task Host vulnerability that was flagged as actively exploited in April. Task Host is a core Windows system component that allows DLL-based processes to run in the background and prevents data corruption by ensuring they close […]
Microsoft working on Defender patch for ShieldBreak zero-day
On Friday, Microsoft confirmed it has begun working on a security patch for a Defender zero-day vulnerability named “ShieldBreak.” A security researcher who uses the “Nightmare Eclipse” handle disclosed this privilege escalation vulnerability after Microsoft released the August 2026 Patch Tuesday security updates. ”Microsoft is aware of the reported vulnerability and is actively investigating the […]
Microsoft patches LegacyHive Windows zero-day vulnerability
Microsoft has released security patches to address a Windows zero-day vulnerability known as “LegacyHive,” disclosed after the July 2026 Patch Tuesday. The security flaw was disclosed by a security researcher who uses the “Nightmare Eclipse” handle in protest of Microsoft’s bug bounty and vulnerability disclosure practices. Nightmare Eclipse published a LegacyHive proof-of-concept (PoC) exploit hours […]
Lazarus hackers exploited Windows zero-day to target defense firms
North Korean hackers have been exploiting a Windows zero-day vulnerability (CVE-2026-68820) to target defense-sector companies as part of the Operation Dream Job campaign. Microsoft addressed the flaw in this month’s Patch Tuesday security updates, marking it as actively exploited in the wild. Researchers found that the Lazarus threat group has been leveraging it since early July. Microsoft […]
New Microsoft Defender ‘ShieldBreak’ zero-day grants SYSTEM privileges
A security researcher known as Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named “ShieldBreak” after Microsoft released the August 2026 Patch Tuesday security updates. The new vulnerability is described as a bypass for RoguePlanet, another Defender privilege escalation flaw disclosed in June and patched by Microsoft one month later. However, cybersecurity expert Kevin […]
New RefluXFS Linux flaw lets attackers gain root privileges
A nine-year-old race condition vulnerability in the Linux kernel’s XFS filesystem, tracked as CVE-2026-64600, allows local attackers to overwrite protected files and gain root privileges. Dubbed RefluXFS by the Qualys Threat Research Unit (TRU), which found and reported it, the security flaw affects systems with an XFS filesystem with reflink enabled (a default configuration on […]
Windows LegacyHive zero-day flaw gets free, unofficial patches
Free unofficial patches are available for a recently disclosed Windows zero-day flaw that allows attackers to escalate privileges on up-to-date Windows systems. The vulnerability (dubbed LegacyHive and without a CVE ID for easy tracking) was found by a security researcher using the “Nightmare Eclipse” handle in the Windows User Profile Service. Nightmare Eclipse disclosed it the day […]
New Windows LegacyHive zero-day gives hackers admin privileges
A security researcher using the “Nightmare Eclipse” handle has released a Windows zero-day exploit dubbed LegacyHive that allows attackers to escalate privileges on up-to-date Windows systems. Nightmare Eclipse published a proof-of-concept (PoC) exploit hours after Microsoft released its July 2026 Patch Tuesday updates, saying that it abuses a security vulnerability in the Windows User Profile […]
RedHook Android malware now uses Wireless ADB for shell access
A new version of the RedHook Android malware abuses the Android Wireless Debugging (Wireless ADB) mechanism in a novel way to gain shell-level privileges without requiring a computer connection. Researchers at cybersecurity company Group-IB analyzed the new release of the mobile malware and say that it significantly expands its capabilities compared to the previous variant […]