CVE-2026-40456

OS Command Injection in LMS

CVSS 8.6 HIGHEPSS 0.9%CWE-78

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.6EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

18 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

An OS Command Injection vulnerability exists in LMS (LAN Management System) before commit 9fcb4de due to an IP address parameter being passed to the "exec()" function without proper validation, allowing attackers to execute arbitrary operating system commands.

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N

Affected products

LMS · LMS

References

https://cert.pl/posts/2026/06/CVE-2026-40455 https://github.com/chilek/lms/commit/9fcb4de19b7d76394898dbc124252b86b07ac0ed https://lms.org.pl/