ThreatsTechnology, Cloud & SaaSHighRed Hat Enterprise Linux libuser Race Condition Flaw CVE-2015-3246 Added to CISA KEV Under Active ExploitationCISA adds Red Hat libuser vulnerability CVE-2015-3246 (CVSS 8.8) to KEV catalog following active in-the-wild exploitation for root privilege escalation.Tom Verhoeven·17 Sep 2026, 11:55 IST·12 min read