CVE-2026-84190CWE-77command-injection

CVE-2026-84190

High · published September 1, 2026

CVSS v3.1
7.2
EPSS
1%
Percentile
58.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00863 · 58.2th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-09-01T16:17Z
References (3)
https://github.com/librenms/librenms/security/advisories/GHSA-jf24-8g2h-2wg7 · [email protected]https://www.vulncheck.com/advisories/librenms-before-26.5.0-remote-code-execution-via-aboutcontroller · [email protected]https://github.com/librenms/librenms/security/advisories/GHSA-jf24-8g2h-2wg7 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 1%
    epss
  • 01 SEP 11:33Z
    LibreNMS before 26.5.0 Remote Code Execution via AboutController
    cvelistv5