CVE-2021-3567

Name: CVE-2021-3567
Creator: NVD / NIST
Published: 2022-03-25T19:15:09.067+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.11%

Last modified Jun 17, 2026

CVE-2021-3567 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. EPSS estimates a 1.11% chance of exploitation in the next 30 days.

Description

A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.11%

61.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gnome	Caribou	< 0.4.21

References

https://bugzilla.redhat.com/show_bug.cgi?id=1962836Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1962836Issue Tracking, Third Party Advisory

Timeline

Published: Mar 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3567?

How severe is CVE-2021-3567?

CVE-2021-3567 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.11% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3567?

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-2021-3567?

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

Scan your code now

Source: NVD / NIST