Low 2.7Published Mar 18, 2025

CVE-2025-30258In 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 si…

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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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: 2.7 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L
Weakness (CWE): CWE-754
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Analyzed
Record last updated: Mar 19, 2025
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

GnuPG GnuPG gnupg:gnupg (from the name)	before 2.5.5	CNA record
gnupg gnupg gnupg:gnupg	before 2.4.8; from 2.5.0 before 2.5.5	NVD

References

References

https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html	mailing-list, release-notes, vendor-advisory
https://dev.gnupg.org/T7527	exploit, issue-tracking
https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158	issue-tracking

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.