CVE-2026-77692

Published: Sep 16, 2026Modified: Oct 26, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: security-officer@isc.org (Secondary)

Description

An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (3)

https://downloads.isc.org/isc/bind9/9.20.29

Source: security-officer@isc.org

https://downloads.isc.org/isc/bind9/9.21.26

Source: security-officer@isc.org

https://kb.isc.org/docs/cve-2026-77692

Source: security-officer@isc.org

Timeline

No history available yet.