What is CVE-2026-55964?

CVE-2026-55964 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Chain intermediate CA:TRUE without keyCertSign accepted as a signing CA (temporary CA exemption)

Which CVE IDs does CVE-2026-55964 cover?

CVE-2026-55964 covers the following CVE IDs: CVE-2026-55964. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-55964?

CVE-2026-55964 has a CVSS v3 base score of 5.3, published by Microsoft Security Response Center (MSRC).

CVE-2026-55964MediumCVSS 5.3

Chain intermediate CA:TRUE without keyCertSign accepted as a signing CA (temporary CA exemption)

Vendor

Microsoft Security Response Center (MSRC)

Published

July 1, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-55964 →