GCVE-110-ISC-2026-13321

Advisory Published

Vulnetix · Advisory published July 22, 2026

CVE: CVE-2026-13321 Title: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field Document version: 2.0 Posting date: 22 July 2026 Program impacted: BIND 9 Versions affected: BIND 9.11.0 -> 9.18.50 9.20.0 -> 9.20.24 9.21.0 -> 9.21.23 BIND Supported Preview Edition 9.11.3-S1 -> 9.18.50-S1 9.20.9-S1 -> 9.20.24-S1 Severity: High Exploitable: Remotely Description: The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. Impact: ...

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Affected Products

Vendor	Product	Versions	Platforms
ISC	BIND	—	—

Aliases

CVE-2026-13321

References

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

advisory

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