CVE-2015-3246
Red Hat Libuser Race Condition Vulnerability
5.1
CVSS
8.8%
EPSS (exploit prob.)
94.9%
EPSS percentile
Yes
Actively exploited
No
Ransomware use
2026-08-26
Added
▲ +1.7 pts
20-day EPSS trend
Summary
Red Hat libuser contains a race condition vulnerability that allows authenticated local users to corrupt the /etc/passwd file to cause a denial of service or privilege escalation.
Affected software
Vendor: Red Hat · Product: Libuser
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
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