CVE-2018-15687

mediumpriority · track · 38EPSS 0.011 · 64 %ileexploit · functionalDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

1.06% (64th) EPSS

CVSS 6.9 · medium

Is it mine?

18 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–7.8

v2.06.9mediumAV:L/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.4 · impact 10

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1 · impact 5.9

v3.07.8highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.07.8highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · security@ubuntu.comexploitability 1.8 · impact 5.9

v3.17highAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.6mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-362USprimaryCWE-362US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-45715systemd - 'chown_one()' Dereference Symlinksfunctional · exploit_db

affected products (18)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Open Source CentOSall versionscert_bundDEcpe:/o:centos:centos:-
Open Source systemd <=239all versionscert_bundDE
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source systemd≤ 239cert_bundDE
systemd systemd≤ unspecified ≤239enisa_euvdEU
Canonical Ltd. Ubuntu≤ 18.10fstec_bduRU
Canonical Ltd. Ubuntu≤ 16.04 ESMfstec_bduRU
Canonical Ltd. Ubuntu≤ 18.04 LTSfstec_bduRU
ООО "Открытая мобильная платформа" ОС Аврора≤ 4.0.2fstec_bduRU
Сообщество свободного программного обеспечения Systemd≤ 239fstec_bduRU
canonical ubuntu linux= 16.04nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
canonical ubuntu linux= 18.04nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
canonical ubuntu linux= 18.10nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
systemd project systemd235 → 240nvdUScpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-0391systemd: Mehrere SchwachstellenDeutsch2018-10-28csaf · cert_bundDE
Ein lokaler oder entfernter Angreifer kann mehrere Schwachstellen in systemd ausnutzen, um seine Privilegien zu erhöhen oder Sicherheitsrestriktionen zu umgehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2018-10-26modified 2026-06-17

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+4133 more

references (15)

External citations — patches, advisories, analysis.

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