Skip to content
Fencer Vulns
high 7.5

CVE-2021-3698 json

A flaw was found in Cockpit in versions prior to 260 in the way it handles the certificate verification performed by the System Security Se…

published 2022-03-08 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26983

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

A flaw was found in Cockpit in versions prior to 260 in the way it handles the certificate verification performed by the System Security Services Daemon (SSSD). This flaw allows client certificates to authenticate successfully, regardless of the Certificate Revocation List (CRL) configuration or the certificate status. The highest threat from this vulnerability is to confidentiality.

Patch / fix

  • cockpit-project cockpit 260
  • cockpit Debian 14, Debian 13, Debian 12 260-1

debian advisories DEBIAN-CVE-2021-3698

  • cockpit RHEL 8 264.1-1.el8
  • cockpit-ws RHEL 8 264.1-1.el8
  • cockpit-bridge RHEL 8 264.1-1.el8
  • cockpit-system RHEL 8 264.1-1.el8

red hat advisories RHSA-2022:2008

  • cockpit AlmaLinux 8 264.1-1.el8
  • cockpit-ws AlmaLinux 8 264.1-1.el8
  • cockpit-bridge AlmaLinux 8 264.1-1.el8
  • cockpit-system AlmaLinux 8 264.1-1.el8

almalinux advisories ALSA-2022:2008

  • cockpit Rocky Linux 8 264.1-1.el8

rocky linux advisories RLSA-2022:2008

  • cockpit Arch Linux 260-1

arch linux advisories AVG-1393

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-2021-3698 updated cvss 7.5

cockpit: authenticates with revoked certificates

  • Red Hat Enterprise Linux 7 cockpit, cockpit-ws, cockpit-bridge, cockpit-system, cockpit-machines-ovirt Red Hat OpenShift Container Platform 3.11 cockpit, cockpit-kubernetes
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux BaseOS (v. 8) cockpit 264.1-1.el8, cockpit-ws 264.1-1.el8, cockpit-bridge 264.1-1.el8, cockpit-system 264.1-1.el8
    fixed: vendor fix RHSA-2022:2008
  • Red Hat Enterprise Linux 9 cockpit, cockpit-ws, cockpit-pcp, cockpit-bridge, cockpit-system, cockpit-storaged, +1 more Red Hat Virtualization 4 cockpit
    not affected: vulnerable code not present

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

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

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:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a cockpit

Classification

Weakness
  • CWE-295 Improper Certificate Validation

References

Sources

Fencer Vulns 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.