CVE-2025-30258

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."

Category

2.7
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.01%
Affected: GnuPG GnuPG
Published at:
Updated at:

References

Link Tags
https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html
https://dev.gnupg.org/T7527
https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158

Frequently Asked Questions

What is the severity of CVE-2025-30258?
CVE-2025-30258 has been scored as a low severity vulnerability.
How to fix CVE-2025-30258?
To fix CVE-2025-30258, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-30258 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-30258 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-30258?
CVE-2025-30258 affects GnuPG GnuPG.
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