GnuPG up to 2.5.4 Certificate Import unusual condition

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in GnuPG up to 2.5.4. Affected by this issue is some unknown functionality of the component Certificate Import. The manipulation results in unusual condition. This vulnerability is cataloged as CVE-2025-30258. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in GnuPG up to 2.5.4. Affected is an unknown part of the component Certificate Import. The manipulation with an unknown input leads to a unusual condition vulnerability. CWE is classifying the issue as CWE-754. The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product. This is going to have an impact on availability. CVE summarizes:

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."

The advisory is available at lists.gnupg.org. This vulnerability is traded as CVE-2025-30258 since 03/19/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 241673 (SUSE SLED15 / SLES15 / openSUSE 15 : Recommended update for gpg2 (SUSE-SU-2025:02259-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.5.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (241673) and EUVD (EUVD-2025-6762). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CNA Base Score: 2.7
CNA Vector (MITRE): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Unusual condition
CWE: CWE-754
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 241673
Nessus Name: SUSE SLED15 / SLES15 / openSUSE 15 : Recommended update for gpg2 (SUSE-SU-2025:02259-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GnuPG 2.5.5

Timelineinfo

03/19/2025 🔍
03/19/2025 +0 days 🔍
03/19/2025 +0 days 🔍
10/10/2025 +205 days 🔍

Sourcesinfo

Advisory: lists.gnupg.org
Status: Confirmed

CVE: CVE-2025-30258 (🔍)
GCVE (CVE): GCVE-0-2025-30258
GCVE (VulDB): GCVE-100-300114
EUVD: 🔍

Entryinfo

Created: 03/19/2025 22:57
Updated: 10/10/2025 16:58
Changes: 03/19/2025 22:57 (62), 06/07/2025 17:41 (1), 07/10/2025 16:53 (2), 10/10/2025 16:58 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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