CVE-2016-4422
CRITICALCVSS 9.8/10EPSS 1.80%
Last modified
CVE-2016-4422 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.. EPSS estimates a 1.80% chance of exploitation in the next 30 days.
Description
The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libpam-Sshauth Project | Libpam-Sshauth | All versions |
| Debian | Debian Linux | 8.0 |
References
- http://www.debian.org/security/2016/dsa-3567Third Party Advisory
- http://www.debian.org/security/2016/dsa-3567Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-4422?
The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.
How severe is CVE-2016-4422?
CVE-2016-4422 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.80% probability of exploitation in the next 30 days.
How do I fix CVE-2016-4422?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2016-4422?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST