CVE-2026-40223

MEDIUMNVD 4.74.7—Trending — 4 sources updated this week

4.7

In systemd 258 before 260, a local unprivileged user can trigger an assert when a Delegate=yes and User= unit exists and is running.

CVSS v3: 4.7
EG Score: 4.7(medium)
EPSS: 4.2%
KEV: Not listed

Published

April 10, 2026

Last Modified

April 27, 2026

References (1)

cve@mitrehttps://github.com/systemd/systemd/security/advisories/GHSA-x4h8-rrrg-q78f

Vendor Advisories for CVE-2026-40223(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

RHSA-2026:7299
Red Hat Product SecurityMedium
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	systemd-main-260.1-2.1.hum1	2026-04-09	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

CWE-696

Data Freshness Timeline

(refreshed 17× in last 7d / 20× 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.

2026-06-02 23:42 UTCEG score recompute
2026-06-02 23:42 UTCVendor advisory
2026-06-02 23:42 UTCGHSA enrichment
2026-06-02 20:13 UTCepss_batch
2026-06-01 13:52 UTCepss_batch
2026-06-01 13:52 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch

Frequently asked(5)

What is CVE-2026-40223?

CVE-2026-40223 is a medium vulnerability published on April 10, 2026. In systemd 258 before 260, a local unprivileged user can trigger an assert when a Delegate=yes and User=<unset> unit exists and is running.

When was CVE-2026-40223 disclosed?

CVE-2026-40223 was first published in the National Vulnerability Database on April 10, 2026, with the most recent update on April 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-40223 actively exploited?

CVE-2026-40223 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-40223?

CVE-2026-40223 has a CVSS v3 base score of 4.7 (NVD).

How do I remediate CVE-2026-40223?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40223, 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.

Dependency Blast Radius

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CVE-2026-40223

📅 Published

🔄 Last Modified

🔗 References (1)

📣 Vendor Advisories for CVE-2026-40223(1)