What is CVE-2026-39831?

CVE-2026-39831 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh

Which CVE IDs does CVE-2026-39831 cover?

CVE-2026-39831 covers the following CVE IDs: CVE-2026-39831. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-39831?

CVE-2026-39831 has a CVSS v3 base score of 9.1, published by Microsoft Security Response Center (MSRC).

CVE-2026-39831HighCVSS 9.1

Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh

Vendor

Microsoft Security Response Center (MSRC)

Published

May 28, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-39831 →