What’s Vulnerable › Vulnerabilities

CVE-2026-40456: OS Command Injection in LMS

• Severity: high (CVSS 8.6 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-18 · updated 2026-06-22
• Weakness: CWE-78

Description

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.

References

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

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