CVE-2025-12260 TOTOLINK A3300R POST Parameter cstecgi.cgi setSyslogCfg stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the TOTOLINK A3300R router via the setSyslogCfg function, potentially leading to code execution or denial of service.
- 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-2025-12260?
CVE-2025-12260 is a high-severity memory corruption vulnerability in Totolink A3300r Firmware, published on 27 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setSyslogCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. Such manipulation of the argument enable leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-12260?
It affects 1 product.
Products include Totolink A3300r Firmware.
How do I fix CVE-2025-12260?
No fix has been published for CVE-2025-12260 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-12260 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-12260 exists.
Other vulnerabilities in Totolink A3300r Firmware
Sources
Also known as GHSA-5f4f-x6x3-qpw3.