CVE-2015-3246

At a glance

Severity: HIGH 7.4
Exploitation: Known exploited (CISA KEV) · added 2026-08-26
Exploited per ENISA since 2026-08-26
EPSS: EPSS 8.50 % · percentile 95 (2026-10-27)
State: PUBLISHED
Published: 2015-08-11
Updated: 2026-10-01
Assigner: redhat
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.4	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP
CVSS 3.1	HIGH 7.4	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0	HIGH 7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

European references

ENISA EUVD · EUVD-2015-3301
GCVE · GCVE-0-2015-3246

Affected configurations (NVD CPE)

cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
cpe:2.3:a:libuser_project:libuser:*:*:*:*:*:*:*:* < 0.56.13-8
cpe:2.3:a:libuser_project:libuser:*:*:*:*:*:*:*:* ≥ 0.60 < 0.60-7

Affected products

Product	Versions
	affected n/a

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD