CVE-2015-3246
78Vexday Risk Score
Patch now. It under exploitation confirmed by CISA and has a working public exploit.
ssvc Actcvss 5.1epss 8.8%
from disclosure to weapon0 days
Published on NVDAug 11
1st PoCJul 27
metasploitJul 24
CISA KEV+4033d
exploitation probability
8.8%top 5% of all CVEs
observed exploitation
yesCISA + VulnCheck
3 public exploit(s)
Action required by CISAfederal deadline: 2026-09-09
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.
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:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
n/a · n/apublic PoCs found — 3✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/37706exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/44633cve_referencewww.exploit-db.com/exploits/44633/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-08/msg00000.htmlhttp://rhn.redhat.com/errata/RHSA-2015-1482.htmlhttp://rhn.redhat.com/errata/RHSA-2015-1483.htmlhttps://access.redhat.com/articles/1537873https://blog.talosintelligence.com/uat-10147-chinese-speaking-adversary-integrates-agentic-ai-into-post-compromise-operations/https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-3246https://www.exploit-db.com/exploits/44633/https://www.qualys.com/2015/07/23/cve-2015-3245-cve-2015-3246/cve-2015-3245-cve-2015-3246.txthttp://www.securityfocus.com/bid/76022http://www.securitytracker.com/id/1033040