CVE-2025-23013
highpriority · track · 0EPSS 0.004 · 35 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.4–7.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (15)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2025/01/15/1cnnvd
- http://www.openwall.com/lists/oss-security/2025/01/16/2cnnvd
- http://www.openwall.com/lists/oss-security/2025/01/16/3cnnvd
- http://www.openwall.com/lists/oss-security/2025/01/16/4cnnvd
- http://www.openwall.com/lists/oss-security/2025/01/16/5cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-23013cnnvd
- https://www.yubico.com/support/security-advisories/ysa-2025-01/cnnvd
- https://www.yubico.com/support/security-advisories/ysa-2025-01/enisa_euvd
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