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."
Published: 2025-03-19
Score: 2.7 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-6762 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."
Ubuntu USN Ubuntu USN USN-7412-1 GnuPG vulnerability
Ubuntu USN Ubuntu USN USN-7412-3 GnuPG vulnerability
History

Fri, 10 Oct 2025 14:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:gnupg:gnupg:*:*:*:*:*:*:*:*

Thu, 20 Mar 2025 14:00:00 +0000

Type Values Removed Values Added
Title gnupg: verification DoS due to a malicious subkey in the keyring
References
Metrics threat_severity

None

threat_severity

Low


Wed, 19 Mar 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 19 Mar 2025 19:30:00 +0000

Type Values Removed Values Added
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."
Weaknesses CWE-754
References
Metrics cvssV3_1

{'score': 2.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-03-19T20:49:22.417Z

Reserved: 2025-03-19T00:00:00.000Z

Link: CVE-2025-30258

cve-icon Vulnrichment

Updated: 2025-03-19T20:48:51.269Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-19T20:15:20.140

Modified: 2025-10-16T16:53:07.557

Link: CVE-2025-30258

cve-icon Redhat

Severity : Low

Publid Date: 2025-03-19T00:00:00Z

Links: CVE-2025-30258 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T15:26:05Z

Weaknesses