LOW 2.7 Microsoft

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 "verification DoS."

Microsoft Security Update 2025-Mar: 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 Products

References

Published: 2025-03-11 · Source: Microsoft · Feed updated: 2026-08-10
This low severity vulnerability with a CVSS score of 2.7 was published on 2025-03-11 via Microsoft. Affected: cbl2 gnupg2 2.4.0-2 on CBL Mariner 2.0, azl3 gnupg2 2.4.7-1 on Azure Linux 3.0, azl3 gnupg2 2.4.9-1 on Azure Linux 3.0 and 2 more.
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