CVE-2018-15687: high-severity vulnerability in systemd
systemd: chown_one() can dereference symlinks
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.8epss 1.1%
from disclosure to weapon3 days
Published on NVDOct 26
1st PoC+3d
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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
systemd · systemdpublic PoCs found — 2✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/45715cve_referencewww.exploit-db.com/exploits/45715/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — systemd
In the same product, most dangerous first.
CVE-2018-15686HIGHsystemd: reexec state injection: fgets() on overlong lines leads to line splittingEPSS 2.3%CVE-2018-15688HIGHOut-of-Bounds write in systemd-networkd dhcpv6 option handlingEPSS 1.8%CVE-2012-1101—CVE-2012-1101EPSS 0.4%CVE-2026-40227MEDIUMCVE-2026-40227EPSS 0.2%CVE-2026-40228LOWCVE-2026-40228EPSS 0.2%CVE-2026-40225MEDIUMCVE-2026-40225EPSS 0.1%