CVE-2025-30258

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

19/03/2025

Last modified:

16/10/2025

Description

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."

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 2.70 LOW
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): Low