CVE-2026-84190
LibreNMS before 26.5.0 Remote Code Execution via AboutController
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 1, 2026
- Updated
- Oct 8, 2026
- Reserved
- Sep 1, 2026
Description
LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shell_exec() without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable file and trigger code execution by accessing the /about endpoint.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Products
| Product | Versions |
|---|---|
librenmslibrenms |
|
References
- GitHub Security Advisory (GHSA-jf24-8g2h-2wg7)vendor-advisory
- VulnCheck Advisory: LibreNMS before 26.5.0 Remote Code Execution via AboutControllerthird-party-advisory
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