CVE-2025-23013
pam-u2f - security update
EPSS 0.40%
Description
In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product implements a Pluggable Authentication Module (PAM) that can be deployed to support authentication using a YubiKey or other FIDO compliant authenticators on macOS or Linux. This software package has an issue that allows for an authentication bypass in some configurations. An attacker would require the ability to access the system as an unprivileged user. Depending on the configuration, the attacker may also need to know the user's password.
How to fix CVE-2025-23013
To remediate CVE-2025-23013, upgrade the affected package to a fixed version below.
- —upgrade to 1.1.0-1.1+deb11u1 or later
- —upgrade to 1.1.0-1.1+deb11u1 or later
- —upgrade to 1.1.0-1.1+deb12u1 or later
Is CVE-2025-23013 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.1.0-1.1+deb11u1
- from 0, < 1.1.0-1.1+deb11u1
- from 0, < 1.1.0-1.1+deb12u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |