CVE-2025-6402 TOTOLINK X15 HTTP POST Request formIpv6Setup buffer overflow
Remote attackers can trigger a buffer overflow in the IPv6 setup handler of TOTOLINK X15 routers, potentially leading to arbitrary code execution.
- 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-2025-6402?
CVE-2025-6402 is a high-severity memory corruption vulnerability in TOTOLINK X15, published on 21 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formIpv6Setup of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-6402?
It affects 1 product.
Products include Totolink X15 Firmware.
How do I fix CVE-2025-6402?
No fix has been published for CVE-2025-6402 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-2025-6402 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6402 exists.
Other vulnerabilities in TOTOLINK X15
- CVE-2025-8242 TOTOLINK X15 HTTP POST Request formFilter buffer overflow
- CVE-2025-8243 TOTOLINK X15 HTTP POST Request formMapDel buffer overflow
- CVE-2025-8244 TOTOLINK X15 HTTP POST Request formMapDelDevice buffer overflow
- CVE-2025-8245 TOTOLINK X15 HTTP POST Request formMultiAPVLAN buffer overflow
- CVE-2025-8246 TOTOLINK X15 HTTP POST Request formRoute buffer overflow
Sources
Also known as GHSA-pw29-w6hf-27h5.