CVE-2025-6399 TOTOLINK X15 HTTP POST Request formIPv6Addr buffer overflow
Remote attackers can trigger a buffer overflow in the IPv6 address handler of TOTOLINK X15 routers, potentially leading to code execution or service disruption.
- 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-2025-6399?
CVE-2025-6399 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, which was classified as critical, was found in TOTOLINK X15 1.0.0-B20230714.1105. Affected is an unknown function of the file /boafrm/formIPv6Addr of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to 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-2025-6399?
It affects 1 product.
Products include Totolink X15 Firmware.
How do I fix CVE-2025-6399?
No fix has been published for CVE-2025-6399 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-2025-6399 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6399 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-cm2j-jgxx-gf4h.