CVE-2021-30461

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 36.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-05-29 · updated 2026-06-17
Weakness: CWE-94

Description

A remote code execution issue was discovered in the web UI of VoIPmonitor before 24.61. When the recheck option is used, the user-supplied SPOOLDIR value (which might contain PHP code) is injected into config/configuration.php.

Affected products

Voipmonitor: before 24.61 — fixed in 24.61

How to fix

Upgrade to a fixed version: Voipmonitor 24.61. Check the vendor advisory for mitigations.

References

https://ssd-disclosure.com/ssd-advisory--voipmonitor-unauth-rce
https://ssd-disclosure.com/ssd-advisory--voipmonitor-unauth-rce

Get alerted when CVE-2021-30461 or the next vulnerability affects your stack