CVE-2025-4544 D-Link DI-8100 jhttpd ddos.asp stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the D-Link DI-8100 router's web interface, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-4544?
CVE-2025-4544 is a high-severity memory corruption vulnerability in D-Link DI-8100, published on 11 May 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability was found in D-Link DI-8100 up to 16.07.26A1 and classified as critical. This issue affects some unknown processing of the file /ddos.asp of the component jhttpd. The manipulation of the argument def_max/def_time/def_tcp_max/def_tcp_time/def_udp_max/def_udp_time/def_icmp_max leads to stack-based buffer overflow. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult.
Which versions are affected by CVE-2025-4544?
It affects 1 product.
Products include Dlink Di-8100 Firmware.
How do I fix CVE-2025-4544?
No fix has been published for CVE-2025-4544 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-2025-4544 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4544 exists.
Other vulnerabilities in D-Link DI-8100
- CVE-2025-44083 Auth bypass in n/a
- CVE-2026-7853 D-Link DI-8100 HTTP auto_reboot.asp sprintf buffer overflow
- CVE-2026-7854 D-Link DI-8100 POST Parameter url_rule.asp url_rule_asp buffer overflow
- CVE-2026-7248 D-Link DI-8100 CGI Endpoint tgfile.htm tgfile_htm buffer overflow
- CVE-2026-7855 D-Link DI-8100 HTTP Request tggl.asp tggl_asp buffer overflow
Sources
Also known as GHSA-pf9f-fx8v-xgx8.