CVE-2026-109971 Clevis: clevis: pkcs#11 token pin exposed on command line via pkcs11-tool
Local attackers can view PKCS#11 token PINs via process listings, exposing sensitive cryptographic keys in Red Hat Enterprise Linux environments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-109971?
CVE-2026-109971 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in the clevis PKCS#11 pin. The clevis-decrypt-pkcs11 script passes the PKCS#11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem.
Weakness: CWE-214
Which versions are affected by CVE-2026-109971?
How do I fix CVE-2026-109971?
Apply the vendor's patch.
Is CVE-2026-109971 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109971 exists.
Sources
Also known as DEBIAN-CVE-2026-109971, GHSA-h4x5-qj8j-4qx3, UBUNTU-CVE-2026-109971.