CVE-2025-11338 D-Link DI-7100G C1 jhttpd login.cgi sub_4C0990 buffer overflow
Remote attackers can trigger a buffer overflow in the D-Link DI-7100G C1 router's web interface, 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-2025-11338?
CVE-2025-11338 is a high-severity memory corruption vulnerability in D-Link DI-7100G C1, published on 6 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in D-Link DI-7100G C1 up to 20250928. This vulnerability affects the function sub_4C0990 of the file /webchat/login.cgi of the component jhttpd. Executing manipulation of the argument openid can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.
Which versions are affected by CVE-2025-11338?
It affects 1 product.
Products include Dlink Di-7100g C1 Firmware.
How do I fix CVE-2025-11338?
No fix has been published for CVE-2025-11338 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-2025-11338 being exploited?
There is no known exploitation of CVE-2025-11338 in the wild and no public exploit code.
Other vulnerabilities in D-Link DI-7100G C1
- CVE-2025-11339 D-Link DI-7100G C1 jhttpd hi_block.asp sub_4BD4F8 buffer overflow
- CVE-2026-2193 D-Link DI-7100G C1 set_jhttpd_info command injection
- CVE-2026-2194 D-Link DI-7100G C1 start_proxy_client_email command injection
- CVE-2025-11335 D-Link DI-7100G C1 jhttpd msp_info.htm sub_46409C command injection
Sources
Also known as GHSA-x6g7-m7rx-fv2h.