CVE-2026-24883

In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).

CVSS v3 3.7 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://dev.gnupg.org/T8049	Patch Product
https://www.openwall.com/lists/oss-security/2026/01/27/8	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gnupg:gnupg:::::-:::*
	cpe:2.3:a:gpg4win:gpg4win::::::::

History

17 Jun 2026, 10:23

Type	Values Removed	Values Added
Summary		(es) En GnuPG anterior a 2.5.17, una longitud de paquete de firma larga hace que parse_signature devuelva éxito con sig->data[] establecido a un valor NULL, lo que lleva a una denegación de servicio (caída de la aplicación).

06 Feb 2026, 18:06

Type	Values Removed	Values Added
References	~~() https://dev.gnupg.org/T8049 -~~	() https://dev.gnupg.org/T8049 - Patch, Product
References	~~() https://www.openwall.com/lists/oss-security/2026/01/27/8 -~~	() https://www.openwall.com/lists/oss-security/2026/01/27/8 - Mailing List, Third Party Advisory
CPE		cpe:2.3:a:gnupg:gnupg:::::-:::* cpe:2.3:a:gpg4win:gpg4win::::::::
First Time		Gnupg gnupg Gpg4win Gnupg Gpg4win gpg4win

27 Jan 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-27 19:16

Updated : 2026-06-17 10:23

NVD link : CVE-2026-24883

Mitre link : CVE-2026-24883

CVE.ORG link : CVE-2026-24883

JSON object : View

Products Affected

gpg4win

gpg4win

gnupg

gnupg

CWE

CWE-476

NULL Pointer Dereference

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