CVE-2022-36158

Severity: high (CVSS 8.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-09-26 · updated 2026-06-17
Weakness: CWE-425

Description

Contec FXA3200 version 1.13.00 and under suffers from Insecure Permissions in the Wireless LAN Manager interface which allows malicious actors to execute Linux commands with root privilege via a hidden web page (/usr/www/ja/mnt_cmd.cgi).

Affected products

Contec Fxa2000 Firmware: before 1.39.00 — fixed in 1.39.00
Contec Fxa3000 Firmware: through 1.13.00
Contec Fxa3020 Firmware: through 1.13.00
Contec Fxa3200 Firmware: through 1.13.00

How to fix

Upgrade to a fixed version: Contec Fxa2000 Firmware 1.39.00. Check the vendor advisory for mitigations.

References

https://gist.github.com/Nwqda/aac33d1936d2b514a3268f145345abb4
https://jvn.jp/en/vu/JVNVU98305100/
https://samy.link/blog/contec-flexlan-fxa2000-and-fxa3000-series-vulnerability-repo
https://www.contec.com/products-services/computer-networking/flexlan-fx/fx-accesspoint/fxa3200/feature/#section
https://gist.github.com/Nwqda/aac33d1936d2b514a3268f145345abb4
https://jvn.jp/en/vu/JVNVU98305100/
https://samy.link/blog/contec-flexlan-fxa2000-and-fxa3000-series-vulnerability-repo
https://www.contec.com/products-services/computer-networking/flexlan-fx/fx-accesspoint/fxa3200/feature/#section

Get alerted when CVE-2022-36158 or the next vulnerability affects your stack