CVE-2026-40227

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call...

6.2 MediumFix available

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.21%Up 0.2 points since Apr 11, 2026

What each source reports

CVE List Score used 6.2

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.

Record: CVE-2026-40227
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1025
Updated: 2026-11-02

EUVDEUVD-2026-21402 6.2

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.

Record: EUVD-2026-21402
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-x53v-pxf5-chx6 6.2

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call...

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.

Record: GHSA-x53v-pxf5-chx6
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1025
Updated: 2026-11-02

NVD 6.2

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.

Record: CVE-2026-40227
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1025
Updated: 2026-11-02

OSV 6.2

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.

Record: CVE-2026-40227
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1025
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-40227 5.5

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.

Record: DEBIAN-CVE-2026-40227
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVRHSA-2026:7299 7.8

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record: RHSA-2026:7299
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-40227 6.2

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.

Record: UBUNTU-CVE-2026-40227
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`systemd` Debian:14	before 260.1-1, plus listed versions 257.13-1~deb13u1257.7-1257.8-1~deb13u1257.8-1~deb13u2257.9-1~deb13u1 Show 19 moreShow less 258-1258.1-1258.1-2258~rc1-1258~rc2-1258~rc2-2258~rc3-1258~rc4-1259-1259.1-1259~rc1-1259~rc2-1259~rc3-1260-1260~rc1-1260~rc1-2260~rc2-1260~rc3-1260~rc4-1	260.1-1
`systemd` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-boot-unsigned` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-container` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-devel` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-journal-remote` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-libs` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-networkd` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-networkd-defaults` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-oomd-defaults` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1

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Affected packages
Package	Affected	Fixed
`systemd-pam` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-resolved` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-rpm-macros` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-shared` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-standalone-repart` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-standalone-shutdown` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-standalone-sysusers` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-standalone-tmpfiles` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-sysusers` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-tests` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-udev` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1
`systemd-ukify` Red Hat:hummingbird:1 From an advisory covering 8 CVEs	before 0:260.1-2.1.hum1	0:260.1-2.1.hum1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	affected
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-40227 is a medium vulnerability (CVSS 6.2) in Systemd, published April 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in systemd 260.1-1.

References

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