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CVE-2026-2100VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Affects Red HatSource 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, 23:33 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
EPSS
1.3% chance of exploitation in 30 days – higher than 70% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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.

AI-suggested

No mitigation is currently available or meets Red Hat's criteria for ease of use, deployment, applicability, or stability.

Description

A moderate severity flaw in p11-kit allows a remote attacker to cause an application-level denial of service or unpredictable system states by invoking the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This can lead to a NULL dereference or undefined behavior. The vulnerability affects Red Hat Enterprise Linux 9.8 and 10.2, Fedora 42 and 43, and Red Hat In-Vehicle OS 2.0. No mitigation is currently available that meets Red Hat's criteria for ease of use and deployment.

References

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