🛡️ OESA-2025-1375 — gnupg2 (CVE-2025-30258)

🟢 CVSS 2.0 — Low ✅ No Known Exploit OSV
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

gnupg2 security update

GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP). GnuPG enables encryption and signing of data and communication, and features a versatile key management system as well as access modules for public key directories.

Security Fix(es):

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."(CVE-2025-30258)

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality none, integrity none, availability low.

Affected software

OESA-2025-1375 is recorded against 1 package.

  • gnupg2 (fixed in 2.4.3-6.oe2403)

Timeline and source

Published on 3 April 2025 and last revised on 18 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.openeuler.org (Advisory)
nvd.nist.gov (Advisory)

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-04-03
Updated 2026-08-20
Modified 2026-08-18
Fix URL N/A

Affected Packages

Software From version Fixed in
gnupg2 — 2.4.3-6.oe2403

Similar Threats

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