CVE-2026-19662

5.9 MEDIUM

Published 2026-09-16 · Updated 2026-09-17

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-416

References

https://downloads.isc.org/isc/bind9/9.20.29
https://kb.isc.org/docs/cve-2026-19662

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.