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 Microsoft ships largest Patch Tuesday on record, with one bug under active attack Microsoft released its largest Patch Tuesday update to date, containing 206 CVEs, driven by the increasing use of AI in vulnerability discovery. A particularly concerning vulnerability, CVE-2026-45657, is described as ‘w… The Record · Jun 10, 2026 Critical CVE-2026-45657CVE-2026-41091CVE-2026-50507UKpatch tuesdayvulnerabilityai
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
