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 bypasses traditional security measures and could be used for malicious purposes. The Register · Aug 12, 2026 High CVE-2026-50656CVE-2026-33825CVE-2026-41091zero-daysharepointvulnerability
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 New Windows Zero-Day Exploit ‘RoguePlanet’ Released A new Windows zero-day exploit, dubbed RoguePlanet, has been released by the threat actor Nightmare Eclipse, targeting Microsoft Defender and potentially leading to local privilege escalation and BitLocker bypass. This f… SecurityWeek · Jun 10, 2026 High CVE-2026-45586CVE-2026-50507CVE-2026-41091USzero-daylocal privilege escalationbitlocker
vulnerability Microsoft Defender RoguePlanet Zero-Day Grants SYSTEM Access on Updated Windows A security researcher, Chaotic Eclipse (MSNightmare), has released a proof-of-concept exploit, RoguePlanet, targeting a zero-day vulnerability in Microsoft Defender, granting SYSTEM-level access on updated Windows 11 and… The Hacker News · Jun 10, 2026 High CVE-2026-33825CVE-2026-45498CVE-2026-41091USzero-dayexploitmicrosoft defender
threat-intel Microsoft Tries to Calm Legal Threat Fears After Zero-Day Disclosure Backlash This article reports on a controversy between Microsoft and a security researcher, known as Nightmare Eclipse, regarding the disclosure of several zero-day vulnerabilities affecting Microsoft products. Microsoft initiall… SecurityWeek · Jun 3, 2026 High CVE-2026-41091CVE-2026-45498CVE-2026-33825USzero-dayvulnerability disclosurelegal action
threat-intel Critical Windows Netlogon RCE flaw now exploited in attacks A critical Remote Code Execution (RCE) vulnerability (CVE-2026-41089) in Windows Netlogon is now being actively exploited in attacks, according to Belgium's national cybersecurity authority, the Centre for Cybersecurity… BleepingComputer · Jun 1, 2026 Critical CVE-2026-41089CVE-2026-45585CVE-2026-33825BErcenetlogonwindows
vulnerability Microsoft Slams Public Zero-Day Disclosures Amid GitHub Researcher Account Removal Microsoft has strongly criticized the public disclosure of zero-day vulnerabilities affecting Windows components, particularly following a researcher's independent disclosures. The company asserts that uncoordinated disc… The Hacker News · May 28, 2026 High CVE-2026-33825CVE-2026-41091CVE-2026-45498zero-dayvulnerabilitydisclosure
threat-intel ⚡ Weekly Recap: Linux Flaws, Defender 0-Days, Router Botnets, and Supply Chain Chaos This week’s security news highlights a significant GitHub breach orchestrated by TeamPCP, stemming from a compromised developer’s device and leveraging vulnerabilities exposed by the TanStack supply chain attack. Simulta… The Hacker News · May 25, 2026 High CVE-2026-46333CVE-2026-41091CVE-2026-45498USGBsupply-chainlinuxgithub
vulnerability Microsoft Warns of Two Actively Exploited Defender Vulnerabilities Microsoft has disclosed two actively exploited vulnerabilities within its Defender security platform, CVE-2026-41091 and CVE-2026-45498, both of which allow for privilege escalation and denial-of-service attacks. These v… The Hacker News · May 21, 2026 High CVE-2026-41091CVE-2026-45498CVE-2026-33825defendervulnerabilityprivilege escalation
vulnerability Microsoft Patches Exploited UnDefend and RedSun Defender Zero-Days Microsoft released patches for two previously exploited zero-day vulnerabilities within its Defender security software. These vulnerabilities, CVE-2026-41091 and CVE-2026-45498, allowed for privilege escalation and denia… SecurityWeek · May 21, 2026 High CVE-2026-41091CVE-2026-45498CVE-2008-4250zero-dayprivilege escalationdenial of service
vulnerability Microsoft warns of new Defender zero-days exploited in attacks Microsoft has released security patches for two zero-day vulnerabilities, CVE-2026-41091 (RedSun) and CVE-2026-45498 (UnDefend), that are being actively exploited in attacks. These flaws, affecting Microsoft Defender and… BleepingComputer · May 21, 2026 High CVE-2026-41091CVE-2026-45498USzero-dayprivilege escalationdefender
vulnerability CISA Adds Seven Known Exploited Vulnerabilities to Catalog CISA has added seven new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2008-4250 Microsoft Windows Buffer Overflow Vulnerability CVE-2009-1537 Micros… CISA Advisories · May 20, 2026 Medium CVE-2008-4250CVE-2009-1537CVE-2009-3459
