CVE-2025-14586 TOTOLINK X5000R cstecgi.cgi snprintf os command injection

Medium 5.3 Published 13 Dec 2025 Updated 24 Feb 2026

Remote attackers can execute arbitrary OS commands on TOTOLINK X5000R routers via the cstecgi.cgi exportOvpn endpoint.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-14586?

CVE-2025-14586 is a medium-severity command injection vulnerability in Totolink X5000r Firmware, published on 13 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was determined in TOTOLINK X5000R 9.1.0cu.2089_B20211224. Affected by this issue is the function snprintf of the file /cgi-bin/cstecgi.cgi?action=exportOvpn&type=user. This manipulation of the argument User causes os command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

Weakness: CWE-78, CWE-77

Which versions are affected by CVE-2025-14586?

It affects 1 product.

Products include Totolink X5000r Firmware.

How do I fix CVE-2025-14586?

No fix has been published for CVE-2025-14586 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2025-14586 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-14586 exists.

All Totolink X5000r Firmware vulnerabilities

Sources

Also known as GHSA-g5qq-5f56-7h93.