CVE-2026-77692

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://downloads.isc.org/isc/bind9/9.20.29
https://downloads.isc.org/isc/bind9/9.21.26
https://kb.isc.org/docs/cve-2026-77692

Configurations

No configuration.

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Un atacante puede causar que “named” aborte enviando una solicitud DNS-over-HTTPS manipulada con un registro SIG(0) criptográficamente inválido y, a continuación, cerrando la conexión de transporte de forma prematura. \nEste problema afecta a BIND?9 en las versiones 9.20.0 hasta la 9.20.27 incluida, 9.21.0 hasta la 9.21.25 incluida y 9.20.9?S1 hasta la 9.20.27?S1 incluida.

16 Sep 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-16 14:17

Updated : 2026-10-26 21:10

NVD link : CVE-2026-77692

Mitre link : CVE-2026-77692

CVE.ORG link : CVE-2026-77692

JSON object : View

Products Affected

No product.

CWE

CWE-476

NULL Pointer Dereference

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