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CVE-2015-3246

HIGHCVSS 3.1 · 7.4 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

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

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.

CISA KEV: known exploited

Added: 2026-08-26 · Due: 2026-09-09

Known ransomware use: Unknown

EPSS: 8.50% · Percentile: 95.0%

As of 2026-10-27

EPSS estimates exploitation probability over the next 30 days. KEV due dates apply to US federal civilian agencies. Confirm your affected versions in vendor advisories.

CWE: CWE-264, CWE-367 · Published: 2015-08-11T14:59:07.040 · Modified: 2026-10-02T11:33:29.473

Sources: NIST NVD, CISA KEV, FIRST EPSS. NVD and EPSS cached up to 6 hours; KEV up to 12 hours.

All CVSS assessments
  • CVSS 3.1: 7.4 (HIGH) · 134c704f-9b21-4f2e-91b3-4a467353bcc0
    CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVSS 2.0: 7.2 (HIGH) · NIST NVD
    AV:L/AC:L/Au:N/C:C/I:C/A:C

References and fixes