CVE-2026-13321 – DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field

CVE ID :CVE-2026-13321

Published : July 22, 2026, 3:16 p.m. | 29 minutes ago

Description :The BIND resolver accepts validly-signed NSEC records where the “Next Domain Name” field points outside the signer’s zone.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

Severity: 8.6 | HIGH

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