CVE-2026-56164
Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability
⚠ KEV
Description
Microsoft SharePoint contains a missing authentication for critical function vulnerability that allows an unauthorized attacker to elevate privileges over a network.
How to fix CVE-2026-56164
No package mapping is available — consult the references below for vendor-specific guidance.
Is CVE-2026-56164 being exploited?
Yes — CVE-2026-56164 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.
Affected packages (0)
No package mapping in OSV.