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Microsoft security patch release for CVE-2026-65660

Security Patch Release
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Last updated
Happening score
H score 38
1 unique sources, 1 articles

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Microsoft's August 11 security updates shipped a fix for CVE-2026-65660 across SharePoint Server 2016, 2019, and Subscription Edition, reducing exposure to a flaw now understood to allow authenticated remote code execution. The patch matters because the vulnerability was initially framed as spoofing, but the underlying weakness supports code injection and arbitrary class loading. Microsoft also turned off the vulnerable function by default in the update. Defenders need to treat the release as a security fix for a code-execution issue, not a low-impact spoofing bug.

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Timeline

  1. 22.09.2026 14:17 2 articles · 1h ago

    Microsoft ships August 11 fix for CVE-2026-65660 in SharePoint Server

    Mitigation Patch Update

    Microsoft's August 11 security updates patched CVE-2026-65660 in SharePoint Server 2016, 2019, and Subscription Edition, and the update turns off the vulnerable function by default. The flaw was later understood to permit authenticated remote code execution through unescaped quotes in ToolPane Register directives, not just the spoofing impact described in Microsoft's advisory.

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