CVE-2025-3538 D-Link DI-8100 jhttpd auth.asp auth_asp stack-based overflow
A stack-based buffer overflow in the D-Link DI-8100 router allows local network attackers to execute arbitrary code via the auth.asp callback argument.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-3538?
CVE-2025-3538 is a high-severity memory corruption vulnerability in D-Link DI-8100, published on 13 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in D-Link DI-8100 16.07.26A1. It has been rated as critical. This issue affects the function auth_asp of the file /auth.asp of the component jhttpd. The manipulation of the argument callback leads to stack-based buffer overflow. The attack needs to be approached within the local network. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-3538?
It affects 1 product.
Products include Dlink Di-8100 Firmware.
How do I fix CVE-2025-3538?
No fix has been published for CVE-2025-3538 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-2025-3538 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3538 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-w9rr-95wc-r9jf.