CVE-2026-13204highCWE-617

CVE-2026-13204: high-severity vulnerability in ISC BIND 9

Unexpected exit in certain situations with NSEC and NSEC3 both present

Published

Follow this CVE+ Monitor BIND+ Monitor bind9

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.5%
If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof. 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
ISC · BIND 9
Related CVEs — ISC BIND 9

In the same product, most dangerous first.

CVE-2018-5740HIGHA flaw in the "deny-answer-aliases" feature can cause an assertion failure in namedEPSS 60.2%CVE-2022-3736HIGHnamed configured to answer from stale cache may terminate unexpectedly while processing RRSIG queriesEPSS 48.4%CVE-2017-3145HIGHImproper fetch cleanup sequencing in the resolver can cause named to crashEPSS 27.7%CVE-2022-3488HIGHnamed may terminate unexpectedly when processing ECS options in repeated responses to iterative queriesEPSS 19.0%CVE-2024-12705HIGHDNS-over-HTTPS implementation suffers from multiple issues under heavy query loadEPSS 18.2%CVE-2017-3143HIGHAn error in TSIG authentication can permit unauthorized dynamic updatesEPSS 18.2%