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CVE-2026-40226

Quick assessment

Affected
systemd systemd
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

systemd是德国Lennart Poettering个人开发者的一款基于Linux的系统和服务管理器。该产品兼容了SysV和LSB的启动脚本，且提供了一个用来表示系统服务间依赖关系的框架。 systemd 260之前版本存在安全漏洞，该漏洞源于nspawn处理特制可选配置文件不当，可能导致逃逸到主机。

CVSS 6.4 · Medium EPSS 0.09% · P1
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I. Basic Information for CVE-2026-40226

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用不可信的源
Source: CVE Program / CVE List V5
Vulnerability Title
systemd 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
systemd是德国Lennart Poettering个人开发者的一款基于Linux的系统和服务管理器。该产品兼容了SysV和LSB的启动脚本，且提供了一个用来表示系统服务间依赖关系的框架。 systemd 260之前版本存在安全漏洞，该漏洞源于nspawn处理特制可选配置文件不当，可能导致逃逸到主机。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
systemd systemd 233 ~ 260 -

II. Public POCs for CVE-2026-40226

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III. Intelligence Information for CVE-2026-40226

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Vendor Advisories for CVE-2026-40226 (1)

Same Patch Batch · systemd · 2026-04-10 · 6 CVEs total

CVE-2026-40224 6.7 MEDIUM systemd 安全漏洞
CVE-2026-40225 6.4 MEDIUM systemd 安全漏洞
CVE-2026-40227 6.2 MEDIUM systemd 安全漏洞
CVE-2026-40223 4.7 MEDIUM systemd 安全漏洞
CVE-2026-40228 2.9 LOW systemd 安全漏洞

IV. Related Vulnerabilities

Same product: systemd
Same vendor: systemd
Same weakness: CWE-348

V. Comments for CVE-2026-40226

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