Medium severity · published Mar 19, 2025
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…
4.7
CVSS
0.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GN
Gnupg · Gnupg
before 2.4.8; 2.5.0 before 2.5.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-30258
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-30258
Exploit
https://dev.gnupg.org/T7527
Issue Tracking
https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158
Mailing List
https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html
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