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Fencer Intel
high 7.5

CVE-2021-3567 json

A flaw was found in Caribou due to a regression of CVE-2020-25712 fix.

published 4y ago modified 4mo ago also EUVD-2021-26877

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

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.

Patch / fix

  • gnome caribou 0.4.21
  • caribou Debian 14, Debian 13, Debian 12 0.4.21-7.1

debian advisories DEBIAN-CVE-2021-3567

  • caribou SLE Module for Desktop Applications 15 SP3, SLE Module for Desktop Applications 15 SP2 0.4.21-12.5.1
  • caribou SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +10 more 0.4.21-5.3.1
  • caribou SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +12 more 0.4.21-8.3.1

suse advisories SUSE-SU-2021:2414-1SUSE-SU-2021:2007-1SUSE-SU-2021:1943-1

  • caribou openSUSE Leap 15.2 0.4.21-lp152.7.3.1
  • caribou openSUSE Leap 15.3 0.4.21-12.5.1

opensuse advisories openSUSE-SU-2021:1071-1openSUSE-SU-2021:2414-1

Is CVE-2021-3567 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-3567 updated cvss 5.5

caribou: segfault on pressing ē since Xorg CVE-2020-25712 fix

  • Red Hat Enterprise Linux 7 caribou, caribou-antler, python-caribou, python2-caribou, caribou-gtk2-module, caribou-gtk3-module
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.16% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a caribou

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.