CVE-2025-23013
UNSCOREDDescription
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
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3.1 Vector
No CVSS vector data available.
Exploit Intelligence
Low risk: more likely to be exploited than 33% of all known CVEs.
References
Related Vulnerabilities
Other CWE-394 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2018-20802 | Medium | 6.5 | 1.5% | - | Fix |
| CVE-2019-0066 | High | 7.5 | 1.4% | - | - |
| CVE-2019-20924 | Medium | 6.5 | 1.3% | - | Fix |
| CVE-2022-24880 | Medium | 5.3 | 1.2% | - | Fix |
| CVE-2023-48429 | Low | 2.7 | 0.6% | - | Fix |
| CVE-2023-25948 | High | 7.5 | 0.6% | - | - |
Common questions
How do I fix CVE-2025-23013?
Published advisories record a fix for 4 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2025-23013 being actively exploited?
Not that we know of. CVE-2025-23013 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.40% is the estimated probability that it will be exploited in the next 30 days. That is higher than 33% of all scored CVEs.
What does CVE-2025-23013 affect?
Published advisories record a fix for pam-u2f (Debian), libpam-u2f (Ubuntu), pam-u2f (Ubuntu), pamu2fcfg (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-02-03.