Is CVE-2018-15686 actively exploited?

CVE-2018-15686 has no public evidence of in-the-wild exploitation as of 2025-06-09.

What is the CVSS score for CVE-2018-15686?

CVE-2018-15686 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2018-15686?

Patch guidance is available from canonical security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2018-15686.

Fix CVE-2018-15686 - HIGH canonical ubuntu linux

Q: Which products are affected by CVE-2018-15686?

6 products: canonical ubuntu linux, canonical ubuntu linux, canonical ubuntu linux, debian debian linux, systemd project systemd, and 1 more.

Description

A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution via NotifyAccess. This can be used to improperly influence systemd execution and possibly lead to root privilege escalation. Affected releases are systemd versions up to and including 239.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-502 · Insecure Deserialization CWE-502 · Insecure Deserialization

Metadata

Primary Vendor: CANONICAL
Published: 10/26/2018
Last Modified: 6/9/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

canonical : ubuntu_linuxcanonical : ubuntu_linuxcanonical : ubuntu_linuxdebian : debian_linuxsystemd_project : systemdoracle : communications_cloud_native_core_network_function_cloud_native_environment

Remediation Guidance

Executive Summary

Cite this page

CVE-2018-15686. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2018-15686

View on NIST NVD

CVE-2018-15686 vulnerability