CVE-2025-4269 TOTOLINK A720R Log cstecgi.cgi access control

Medium 6.9 Published 5 May 2025 Updated 5 May 2025

Remote attackers can bypass access controls to clear system logs on TOTOLINK A720R routers via the cstecgi.cgi endpoint.

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

What is CVE-2025-4269?

CVE-2025-4269 is a medium-severity missing authorization vulnerability in TOTOLINK A720R, published on 5 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was found in TOTOLINK A720R 4.1.5cu.374 and classified as critical. This issue affects some unknown processing of the file /cgi-bin/cstecgi.cgi of the component Log Handler. The manipulation of the argument topicurl with the input clearDiagnosisLog/clearSyslog/clearTracerouteLog leads to improper access controls. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-284, CWE-266

Which versions are affected by CVE-2025-4269?

It affects 1 product.

Products include Totolink A720r Firmware.

How do I fix CVE-2025-4269?

No fix has been published for CVE-2025-4269 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2025-4269 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4269 exists.

Sources

Also known as GHSA-p9pq-9xhx-6pgq.