CVE-2025-8242 TOTOLINK X15 HTTP POST Request formFilter buffer overflow
Remote attackers can trigger a buffer overflow in the HTTP POST 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-2025-8242?
CVE-2025-8242 is a high-severity memory corruption vulnerability in TOTOLINK X15, published on 27 Jul 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 X15 1.0.0-B20230714.1105 and classified as critical. This vulnerability affects unknown code of the file /boafrm/formFilter of the component HTTP POST Request Handler. The manipulation of the argument ip6addr/url/vpnPassword/vpnUser 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-2025-8242?
It affects 1 product.
Products include Totolink X15 Firmware.
How do I fix CVE-2025-8242?
No fix has been published for CVE-2025-8242 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-2025-8242 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8242 exists.
Other vulnerabilities in TOTOLINK X15
- 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
- CVE-2025-6824 TOTOLINK X15 HTTP POST Request formParentControl buffer overflow
Sources
Also known as GHSA-q8p6-8xwq-mvcq.