Exploited vulnerability CISA KEV
CVE-2015-3246: Red Hat Libuser Race Condition Vulnerability
CVE-2015-3246 is a vulnerability in Red Hat Libuser that CISA added to its Known Exploited Vulnerabilities catalog on August 26, 2026, meaning there is evidence it is being exploited. US federal civilian agencies must complete the required action by September 9, 2026.
CVE-2015-3246 is a vulnerability in Red Hat Libuser that CISA added to its Known Exploited Vulnerabilities catalog on August 26, 2026, meaning there is evidence it is being exploited. US federal civilian agencies must complete the required action by September 9, 2026.
- CVE ID
- CVE-2015-3246
- Vendor / project
- Red Hat
- Product
- Libuser
- Added to KEV
- Due date
- Days to remediate
- 14
- Known ransomware use
- Unknown
- Weakness
- Not listed
CISA 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.
Required action #
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notes and references #
This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://access.redhat.com/articles/1537873 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2015-3246
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