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CVE-2025-30258

2.7 · LOW

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…

Published Mar 19, 2025CWE-754EPSS 0.19%

Overview

CVE-2025-30258 is a low-severity vulnerability. It was published on March 19, 2025 and has a CVSS 3.1 base score of 2.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.7, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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."

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdev.gnupg.org/T7527Refdev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158Reflists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-30258?

CVE-2025-30258 is a low-severity vulnerability. It was published on March 19, 2025 and has a CVSS 3.1 base score of 2.7 (LOW).

How severe is CVE-2025-30258?

This vulnerability has a CVSS 3.1 base score of 2.7, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-30258?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-30258?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-30258 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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