CVE-2015-3246

CVE Enrichment

CVSS: 7.4 HIGH
EPSS: 8.43%
EPSS Percentile: 94.89%
CISA KEV: YES — Known Exploited Vulnerability

Description

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: secalert@redhat.com
Published: 11-Aug-2015 21:59
Last Modified: 02-Oct-2026 18:33
EPSS Date: 2026-10-11
CWE: CWE-264, CWE-367

CVSS Vector


            CVSS:3.1                            AV:L /
                            AC:H /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

CISA KEV Details

Date Added: 2026-08-26
Remediation Due: 2026-09-09
Known Ransomware Campaign Use: Unknown
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: 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

Affected Products / Versions

redhat / enterprise_linux
Version / affected range: 5.0
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
redhat / enterprise_linux
Version / affected range: 6.0
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
redhat / enterprise_linux
Version / affected range: 7.0
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
opensuse / opensuse
Version / affected range: 13.2
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
libuser_project / libuser
Version / affected range: * · before (exclusive) 0.56.13-8
cpe:2.3:a:libuser_project:libuser:*:*:*:*:*:*:*:*
libuser_project / libuser
Version / affected range: * · from (inclusive) 0.60 · before (exclusive) 0.60-7
cpe:2.3:a:libuser_project:libuser:*:*:*:*:*:*:*:*

References

Last enrichment sync: 12-Oct-2026 20:45
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

CVE-2015-3246 Recorded Future Identifies 73 High-Impact Vulnerabilities in August, 70 Actively Exploited

CVE (71)

Malware (4)

Threat Actors (1)

Vendors (22)

Products (18)

Tools (7)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.