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RoguePlanet is a high-severity local elevation-of-privilege vulnerability in the Microsoft Malware Protection Engine used by Microsoft Defender and related Microsoft antimalware products. Public technical reporting describes the flaw as a race condition involving improper link resolution before file access in mpengine.dll during Defender scanning and remediation or quarantine handling. By winning the race and redirecting a link target during privileged engine operations, a low-privileged local attacker can cause the engine, which runs with SYSTEM privileges, to operate on an unintended resource. Affected engine versions are reported as versions prior to 1.1.26060.3008, including fully updated Windows 10 and Windows 11 systems before the engine fix was installed.
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No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
162 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft Defender / Microsoft Malware Protection Engine elevation-of-privilege vulnerability caused by a TOCTOU race condition in the remediation workflow, allowing a low-privileged attacker to abuse quarantine handling to obtain SYSTEM privileges.
Previously disclosed Windows vulnerability referenced only in passing among earlier exploit publications.
An elevation-of-privilege vulnerability in Microsoft Defender, known as RoguePlanet, that Microsoft patched out-of-band after proof-of-concept code was posted publicly.
Race condition vulnerability in Microsoft Defender that allows privilege escalation to SYSTEM and arbitrary code execution on fully updated Windows 10 and Windows 11 systems.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.