CVE-2018-15688

HIGHNVD 8.8

8.8

A buffer overflow vulnerability in the dhcp6 client of systemd allows a malicious dhcp6 server to overwrite heap memory in systemd-networkd. Affected releases are systemd: versions up to and including 239.

CVSS v3: 8.8
EG Score: —
EPSS: 72.0%
KEV: Not listed

Published

October 26, 2018

Last Modified

June 9, 2025

References (18)

security@ubuntuhttp://www.securityfocus.com/bid/105745
security@ubuntuhttps://access.redhat.com/errata/RHBA-2019:0327
security@ubuntuhttps://access.redhat.com/errata/RHSA-2018:3665
security@ubuntuhttps://access.redhat.com/errata/RHSA-2019:0049
security@ubuntuhttps://github.com/systemd/systemd/pull/10518
security@ubuntuhttps://lists.debian.org/debian-lts-announce/2018/11/msg00017.html
security@ubuntuhttps://security.gentoo.org/glsa/201810-10
security@ubuntuhttps://usn.ubuntu.com/3806-1/
security@ubuntuhttps://usn.ubuntu.com/3807-1/
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/105745
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHBA-2019:0327
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3665
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:0049
af854a3a-2127-422b-91ae-364da2661108https://github.com/systemd/systemd/pull/10518
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/11/msg00017.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 6× in last 7d / 6× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-15688?

CVE-2018-15688 is a high vulnerability published on October 26, 2018. A buffer overflow vulnerability in the dhcp6 client of systemd allows a malicious dhcp6 server to overwrite heap memory in systemd-networkd. Affected releases are systemd: versions up to and including 239.

When was CVE-2018-15688 disclosed?

CVE-2018-15688 was first published in the National Vulnerability Database on October 26, 2018, with the most recent update on June 9, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-15688 actively exploited?

CVE-2018-15688 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 72.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-15688?

CVE-2018-15688 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2018-15688?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-15688, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2018-15688

📅 Published

🔄 Last Modified

🔗 References (18)