CVE-2015-3246
Red Hat Libuser Race Condition Vulnerability
- Published
- Aug 11, 2015
- Updated
- Aug 27, 2026
- Assigning CNA
- redhat
- Evidence observed
- Jul 27, 2015
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HLow · next 30 days
- Percentile
- 95.0%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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.
Sources
3Educational repository providing proof-of-concept and analysis for CVE-2015-3245 and CVE-2015-3246, intended for authorized security research and learning in controlled environments.
Qualys Corporation · linux · Jul 27, 2015
Responsible use
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