CVE-2025-30258

In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."

CVSS v3 2.7 LOW

2.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.0 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://dev.gnupg.org/T7527	Exploit Issue Tracking
https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158	Issue Tracking
https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html	Mailing List Release Notes Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gnupg:gnupg::::::::
	cpe:2.3:a:gnupg:gnupg::::::::

History

10 Oct 2025, 14:29

Type	Values Removed	Values Added
CPE		cpe:2.3:a:gnupg:gnupg::::::::
References	~~() https://dev.gnupg.org/T7527 -~~	() https://dev.gnupg.org/T7527 - Exploit, Issue Tracking
References	~~() https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158 -~~	() https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158 - Issue Tracking
References	~~() https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html -~~	() https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html - Mailing List, Release Notes, Vendor Advisory
First Time		Gnupg Gnupg gnupg
Summary		(es) En GnuPG anterior a 2.5.5, si un usuario elige importar un certificado con ciertos datos de subclave manipulado que carecen de una firma inversa válida o que tienen indicadores de uso incorrectos, el usuario pierde la capacidad de verificar las firmas realizadas a partir de ciertas otras claves de firma, lo que se conoce como "denegación de servicio de verificación".

19 Mar 2025, 20:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-03-19 20:15

Updated : 2025-10-16 16:53

NVD link : CVE-2025-30258

Mitre link : CVE-2025-30258

CVE.ORG link : CVE-2025-30258

JSON object : View

Products Affected

gnupg

gnupg

CWE

CWE-754

Improper Check for Unusual or Exceptional Conditions

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