CVE-2015-3246
highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.085 · 95 %ileexploit · weaponizedEUUSadded 2026-08-26remediate by 2026-09-09
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.
EPSS · scored 2026-10-27
Red Hat Libuser Race Condition Vulnerability
libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, directly modifies /etc/passwd, which allows local users to cause a denial of service (inconsistent file state) by causing an error during the modification. NOTE: this issue can be combined with CVE-2015-3245 to gain privileges.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (4)
Public proof-of-concept and weaponised exploit code.
- exploit/linux/local/libuser_roothelper_priv_escLibuser roothelper Privilege Escalationweaponized · metasploit
- EDB-37706Libuser Library - Multiple Vulnerabilitiesfunctional · exploit_db
- EDB-44633Libuser - 'roothelper' Local Privilege Escalation (Metasploit)functional · exploit_db
- HORKimhab/CVE-2015-3246CVE-2015-3246PoC · poc_in_github
affected products (7)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (29)
External citations — patches, advisories, analysis.
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00000.htmlcnnvd
- http://rhn.redhat.com/errata/RHSA-2015-1482.htmlcnnvd
- http://rhn.redhat.com/errata/RHSA-2015-1483.htmlcnnvd
- http://www.securityfocus.com/bid/76022cnnvd
- https://access.redhat.com/articles/1537873cnnvd
- https://rhn.redhat.com/errata/RHSA-2015-1482.htmlPatchcnnvd
- https://www.qualys.com/2015/07/23/cve-2015-3245-cve-2015-3246/cve-2015-3245-cve-2015-3246.txtcnnvd
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.htmlenisa_euvd
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