What’s Vulnerable › Vulnerabilities

CVE-2026-44711: pam_usb: Symlink attacks on pad directory and pad files enable authentication bypass and root file corruption

• Severity: high (CVSS 7.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-27 · updated 2026-10-26
• Weakness: CWE-59

Description

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, symlink attacks on pad directory and pad files enable authentication bypass and root file corruption. This vulnerability is fixed in 0.8.7.

Affected products

• mcdope pam_usb: before 0.8.7

References

• https://github.com/mcdope/pam_usb/security/advisories/GHSA-fjpm-p9pj-mp34
• https://github.com/uniget-org/cli/security/advisories/GHSA-qqq4-5773-pmw5

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