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CVE-2024-43491 is a critical Windows Update/Servicing Stack vulnerability affecting Windows 10 version 1507, specifically supported Windows 10 Enterprise 2015 LTSB and Windows 10 IoT Enterprise 2015 LTSB systems. A defect in the servicing stack caused security fixes for certain Optional Components to be rolled back after installation of Windows security updates released from March 2024 through August 2024, beginning with the March 12, 2024 update. As a result, affected optional components could be silently reverted to older RTM-level code, re-exposing previously mitigated vulnerabilities in those components. Public reporting also characterizes the issue as enabling pre-authentication remote code execution through reintroduced flaws in affected components, although Microsoft stated it had not observed exploitation of CVE-2024-43491 itself and instead tied the risk to rollback of fixes for vulnerabilities that may already have been exploited. The issue is limited to Windows 10 version 1507 and does not affect later Windows 10 releases.
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What an attacker gets, and what they’ve been doing with it.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Windows Update remote code execution vulnerability in the Windows 10 version 1507 servicing stack, affecting supported Windows 10 Enterprise 2015 LTSB and Windows 10 IoT Enterprise 2015 LTSB systems; the article treats it as intertwined with exploited issues and includes it among exploited-detected CVEs.
Critical remote code execution vulnerability in Microsoft Windows Update caused by use-after-free memory handling; described as actively exploited.
A Microsoft Windows Update remote code execution vulnerability; Microsoft notes an 'Exploitation Detected' assessment due to a servicing stack rollback of prior fixes on Windows 10 1507, while stating no direct exploitation of CVE-2024-43491 itself has been detected.
Windows 10 v1507 servicing stack defect that rolls back previously applied security updates for optional components, re-exposing patched vulnerabilities.
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.