What is CVE-2026-6291?

CVE-2026-6291 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Bleichenbacher padding oracle in PKCS#7 KTRI RSA PKCS#1 v1.5 decryption

Which CVE IDs does CVE-2026-6291 cover?

CVE-2026-6291 covers the following CVE IDs: CVE-2026-6291. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-6291?

CVE-2026-6291 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-6291?

CVE-2026-6291 affects 1 product, including: azl3 mariadb 10.11.18-1 on Azure Linux 3.0.

CVE-2026-6291MediumCVSS 6.5

Bleichenbacher padding oracle in PKCS#7 KTRI RSA PKCS#1 v1.5 decryption

Vendor

Microsoft Security Response Center (MSRC)

Published

July 1, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-6291 →

🎯 Affected products1

azl3 mariadb 10.11.18-1 on Azure Linux 3.0

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-6291