CVE-2015-3246
Race Condition in Red Hat Libuser. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 26 August 2026.
- Product
- Red Hat Libuser
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
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.
More from Red Hat this year.
- CVE-2015-5287 Privilege Escalation, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.