What is the CVSS score of CVE-2025-30258?

CVE-2025-30258 has a CVSS 3.1 base score of 2.7 (Low). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L. EPSS exploitation probability: 0.0%.

Which versions of Gnupg are affected by CVE-2025-30258?

CVE-2025-30258 is a low-severity vulnerability in GnuPG (CVSS 2.7). The limited severity suggests constrained impact, typically requiring specific conditions or local access for exploitation.

Is there a public PoC exploit available for CVE-2025-30258?

Yes, a public proof-of-concept exploit is available for CVE-2025-30258. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-30258?

During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.

Gnupg CVE-2025-30258

LOW

Improper Check for Unusual or Exceptional Conditions (CWE-754)

2025-03-19 cve@mitre.org

Information Disclosure Gnupg

2.7

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

2.7 LOW

AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:32 vuln.today

PoC Detected

Oct 16, 2025 - 16:53 vuln.today

Public exploit code

CVE Published

Mar 19, 2025 - 20:15 nvd

LOW 2.7

DescriptionCVE.org

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."

AnalysisAI

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. Rated low severity (CVSS 2.7), this vulnerability is no authentication required. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-754. 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." Affected products include: Gnupg. Version information: before 2.5.5.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2025-30258 vulnerability details – vuln.today

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Gnupg CVE-2025-30258

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code