What is CVE-2026-13321?

CVE-2026-13321 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field

Which CVE IDs does CVE-2026-13321 cover?

CVE-2026-13321 covers the following CVE IDs: CVE-2026-13321. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-13321?

CVE-2026-13321 has a CVSS v3 base score of 8.6, published by Microsoft Security Response Center (MSRC).

CVE-2026-13321HighCVSS 8.6

DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field

Vendor

Microsoft Security Response Center (MSRC)

Published

July 27, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-13321 →