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CRITICALCVSS 9.1KNOWN EXPLOITED

CVE-2026-55040

CVE-2026-55040 updated by NVD

Published
2026-08-18
Modified
2026-09-21
Sources
cisa-kev, nvd

Summary

Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.

References

Includes data from the CISA Known Exploited Vulnerabilities catalog.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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