CVE-2026-2100
Low
No strong exploitation signal.
CVSS base
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS — probability of exploitation (30 days)
1.2%
65.7th percentile
CISA KEV
Not listed
Weakness / dates
CWE-824
Published 2026-03-26 · modified 2026-09-06
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | L | Low |
Timeline
- 2026-03-26 — Published (NVD)
- 2026-09-06 — Last modified (NVD)
Description
A flaw was found in p11-kit. A remote attacker could exploit this vulnerability by calling the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This could lead to the RPC-client attempting to return an uninitialized value, potentially resulting in a NULL dereference or undefined behavior. This issue may cause an application level denial of service or other unpredictable system states.
Affected
References
- https://access.redhat.com/errata/RHSA-2026:18143
- https://access.redhat.com/errata/RHSA-2026:18599
- https://access.redhat.com/errata/RHSA-2026:21275
- https://access.redhat.com/errata/RHSA-2026:22634
- https://access.redhat.com/errata/RHSA-2026:27998
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/errata/RHSA-2026:7065
- https://access.redhat.com/security/cve/CVE-2026-2100
- https://bugzilla.redhat.com/show_bug.cgi?id=2437308
- https://github.com/p11-glue/p11-kit/pull/740
- https://github.com/p11-glue/p11-kit/releases/tag/0.26.2