What is CVE-2026-5500?

CVE-2026-5500 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Improper Validation of AES-GCM Authentication Tag Length in PKCS#7 Envelope Allows Authentication Bypass

Which CVE IDs does CVE-2026-5500 cover?

CVE-2026-5500 covers the following CVE IDs: CVE-2026-5500. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

CVE-2026-5500High

Improper Validation of AES-GCM Authentication Tag Length in PKCS#7 Envelope Allows Authentication Bypass

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-5500 →