CVE-2021-3349

Name: CVE-2021-3349
Creator: NVD / NIST
Published: 2021-02-01T05:15:11.88+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.3/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2021-3349 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. GNOME Evolution through 3.38.3 produces a "Valid signature" message for an unknown identifier on a previously trusted key because Evolution does not retrieve enough information from the GnuPG API. NOTE: third parties dispute the significance of this issue, and dispute whether Evolution is the best place to change this behavior. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

GNOME Evolution through 3.38.3 produces a "Valid signature" message for an unknown identifier on a previously trusted key because Evolution does not retrieve enough information from the GnuPG API. NOTE: third parties dispute the significance of this issue, and dispute whether Evolution is the best place to change this behavior

Metrics

CVSS 3.1

3.3/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.35%

26.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-345

Affected Software

Vendor	Product	Versions
Gnome	Evolution	<= 3.38.3

References

https://dev.gnupg.org/T4735Third Party Advisory
https://gitlab.gnome.org/GNOME/evolution/-/issues/299Third Party Advisory
https://mgorny.pl/articles/evolution-uid-trust-extrapolation.htmlExploit, Technical Description, Third Party Advisory
https://dev.gnupg.org/T4735Third Party Advisory
https://gitlab.gnome.org/GNOME/evolution/-/issues/299Third Party Advisory
https://mgorny.pl/articles/evolution-uid-trust-extrapolation.htmlExploit, Technical Description, Third Party Advisory

Timeline

Published: Feb 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3349?

How severe is CVE-2021-3349?

CVE-2021-3349 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3349?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3349?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST