CVE-2025-43979

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-05 · updated 2026-06-17
Weakness: CWE-78

Description

An issue was discovered on FIRSTNUM JC21A-04 devices through 2.01ME/FN that allows authenticated attackers to execute arbitrary OS system commands with root privileges via crafted payloads to the xml_action.cgi?method= endpoint.

References

https://github.com/actuator/cve/blob/main/Firstnum/CVE-2025-43979.txt
https://github.com/actuator/cve/tree/main/Firstnum

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