vulnerability Nightmare Eclipse Drops Windows Zero-Day Exploit ‘ShieldBreak’ A disgruntled security researcher, Nightmare Eclipse, released a new zero-day exploit called ShieldBreak targeting Microsoft Defender, allowing users to escalate privileges on Windows 11 and Server 2025. This exploit leverages a race condition within Defender’s cloud-hydration scan process, and follows a pattern of zer… SecurityWeek · Aug 13, 2026 High CVE-2026-50656zero-daydefenderprivilege escalation
vulnerability Microsoft-vendetta hacker has a new zero day that gives system privileges on fully patched Windows A Microsoft-based hacker has developed a new zero-day vulnerability in on-prem SharePoint, allowing them to gain system privileges on fully patched Windows systems. This represents a significant security risk, as it bypa… The Register · Aug 12, 2026 High CVE-2026-50656CVE-2026-33825CVE-2026-41091zero-daysharepointvulnerability
vulnerability ShieldBreak Zero-Day PoC Claims Microsoft Defender Patch Bypass With SYSTEM Access A security researcher, Chaotic Eclipse, has released a proof-of-concept (PoC) demonstrating a patch bypass for a Microsoft Defender zero-day vulnerability, dubbed ShieldBreak. This vulnerability, CVE-2026-50656 (RoguePla… The Hacker News · Aug 12, 2026 High CVE-2026-50656CVE-2026-62832CVE-2026-68820zero-daypatch-bypassprivilege escalation
vulnerability Microsoft smashes Patch Tuesday record for second successive month Microsoft released a massive Patch Tuesday update, exceeding 600 security vulnerabilities – the largest in the program's history. This surge in vulnerabilities, driven in part by AI-assisted discovery, has led to a signi… The Record · Jul 15, 2026 High CVE-2026-56164CVE-2026-56155CVE-2026-55040UNpatch tuesdayvulnerabilityexploit
vulnerability Microsoft Reins in RoguePlanet Zero-Day Threat A disgruntled security researcher, known as "Nightmare-Eclipse," published a proof-of-concept exploit (RoguePlanet) for a Windows Defender vulnerability, leading Microsoft to issue an out-of-band patch. The vulnerability… Dark Reading · Jul 9, 2026 High CVE-2026-50656CVE-2026-33825zero-dayprivilege-escalationmicrosoft
vulnerability Microsoft Patches Defender ‘RoguePlanet’ Vulnerability Microsoft has released a patch to address a Defender vulnerability, dubbed RoguePlanet, which could allow an attacker to escalate privileges. The vulnerability was initially identified by Nightmare Eclipse (Chaotic Eclip… SecurityWeek · Jul 9, 2026 High CVE-2026-50656CVE-2026-41091CVE-2026-45498vulnerabilitypatchdefender
vulnerability Microsoft Patches RoguePlanet Defender Flaw That Can Grant SYSTEM Privileges Microsoft has patched a critical vulnerability, RoguePlanet, within its Defender antivirus software that could allow attackers to gain SYSTEM-level privileges. This flaw, discovered by Chaotic Eclipse, allows for arbitra… The Hacker News · Jul 9, 2026 Critical CVE-2026-50656CVE-2026-33825CVE-2026-45498vulnerabilityprivilege escalationantivirus
vulnerability Microsoft Confirms RoguePlanet Defender Zero-Day, Says Patch is in Development Microsoft has formally disclosed that it's working to release a patch to address a Defender zero-day codenamed RoguePlanet. The vulnerability has now been assigned the CVE identifier CVE-2026-50656 (CVSS score: 7.8), wit… The Hacker News · Jun 17, 2026 Critical CVE-2026-50656CVE-2026-33825CVE-2026-45498
vulnerability Microsoft Working on Patch for ‘RoguePlanet’ Zero-Day The public PoC code exploits a race condition in Microsoft Defender to spawn a command prompt with System privileges. The post Microsoft Working on Patch for ‘RoguePlanet’ Zero-Day appeared first on SecurityWeek . SecurityWeek · Jun 17, 2026 Critical CVE-2026-50656CVE-2026-33825CVE-2026-41091
vulnerability Microsoft working on Defender patch for RoguePlanet zero-day Microsoft confirmed that it's working on a security patch for a Defender zero-day vulnerability named "RoguePlanet," disclosed one week ago. BleepingComputer · Jun 17, 2026 Critical CVE-2026-50656
