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CVE-2026-2100

34
FAUCET Score

CVE-2026-2100 describes a medium-severity flaw in p11-kit, where a remote attacker can trigger a NULL dereference or undefined behavior by calling the C_DeriveKey function with specific NULL parameters on a remote token. This vulnerability, rated CVSS 5.3 (Medium), allows for an application-level Denial of Service or other unpredictable system states, with no impact on confidentiality or integrity. The attack vector is network-based with low complexity, requiring no user interaction. There is currently no evidence of active exploitation, nor is any public exploit code available through platforms like Metasploit or ExploitDB. Community discussion and media coverage for this vulnerability are minimal, indicating low public attention at this time.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:p11-kit_project:p11-kit:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.16%
Probability of exploitation in next 30 days
EPSS Percentile
63.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0116 is in the 42nd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatvendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: p11-kit
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: p11-kit

Vendor Advisories (2)

microsoft2026-Mar/CVE-2026-2100Moderate

P11-kit: p11-kit: null dereference via c_derivekey with specific null parameters

Mar 10, 2026
redhatCVE-2026-2100Moderate

p11-kit: p11-kit: NULL dereference via C_DeriveKey with specific NULL parameters

Feb 6, 2026

References

access.redhat.com / errata/RHSA-2026:18143
access.redhat.com / errata/RHSA-2026:18599
access.redhat.com / errata/RHSA-2026:21275
access.redhat.com / errata/RHSA-2026:22634
access.redhat.com / errata/RHSA-2026:27998
access.redhat.com / errata/RHSA-2026:7065
access.redhat.com / security/cve/CVE-2026-2100
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingVendor Advisory
github.com / p11-glue/p11-kit/pull/740
Issue TrackingPatch
github.com / p11-glue/p11-kit/releases/tag/0.26.2