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CVE-2026-2100VulnerabilityPublished Updated

Red Hat Security Advisory: p11-kit security update

Affects Red Hat p11-kitSource GCVE Database

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Authoritative record:CVE-2026-2100· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium : upgrade Red Hat p11-kit to 0.26.2 when convenient.

Data as of 5 Nov 2026, 22:49 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.15.3
Patch
Available – fixed in 0.26.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade p11-kit to 0.26.2.

Affected software

ProductAffectedFixed in
p11-gluep11-kitAffected
  • <0.26.2
Fixed in
  • 0.26.2
GitHubp11-kitpkg:github/p11-kitOther threatsAffected
  • <0.26.2
Fixed in
  • 0.26.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

The p11-kit packages provide a mechanism to manage PKCS#11 modules. The p11-kit-trust subpackage includes a PKCS#11 trust module that provides certificate anchors and black lists based on configuration files. Security Fix(es): * p11-kit: p11-kit: NULL dereference via C_DeriveKey with specific NULL parameters (CVE-2026-2100) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.

References

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