Vulnerability · Published Mar 19, 2025 · Assigned by mitre
CVE-2025-30258
Low 2.7
In plain English
A low-severity security flaw in GnuPG from GnuPG. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)2.7Low
Exploit odds (30 days)0.2%top 90.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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."
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gnupg2 | no fix listed | DEBIAN-CVE-2025-30258 |
| Debian:13 | gnupg2 | 2.2.46-5 | DEBIAN-CVE-2025-30258 |
| Debian:14 | gnupg2 | 2.2.46-5 | DEBIAN-CVE-2025-30258 |
| Ubuntu:22.04:LTS | gnupg2 | 2.2.27-3ubuntu2.3 | USN-7412-1 |
| Ubuntu:22.04:LTS | gnupg2 | 2.2.27-3ubuntu2.3 | UBUNTU-CVE-2025-30258 |
| Ubuntu:24.04:LTS | gnupg2 | 2.4.4-2ubuntu17.2 | UBUNTU-CVE-2025-30258 |
| Ubuntu:24.04:LTS | gnupg2 | 2.4.4-2ubuntu17.2 | USN-7412-1 |
| Ubuntu:25.10 | gnupg2 | 2.4.4-2ubuntu23 | UBUNTU-CVE-2025-30258 |
Affected products (as reported)
Weakness: CWE-754 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L