VulnerabilityAnalyzed
CVE-2025-30258
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…
MEDIUM 4.7EPSS 0.19%
Does this matter?
Lower severity and a low EPSS score (0.19%). Track it; it rarely justifies an emergency change on its own.
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."
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.19% probability · 9th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-754
- Affected
- gnupg/gnupg
- Source
- cve@mitre.org
References
- https://dev.gnupg.org/T7527Exploit, Issue Tracking
- https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158Issue Tracking
- https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.htmlMailing List, Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.