CVE-2026-7853 D-Link DI-8100 HTTP auto_reboot.asp sprintf buffer overflow
Remote attackers can trigger a buffer overflow in the HTTP handler of D-Link DI-8100 routers via the auto_reboot.asp endpoint, potentially leading to code execution or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7853?
CVE-2026-7853 is a critical memory corruption vulnerability in D-Link DI-8100, published on 5 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in D-Link DI-8100 16.07.26A1. Affected is the function sprintf of the file /auto_reboot.asp of the component HTTP Handler. This manipulation of the argument enable/time causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-7853?
It affects 1 product.
Products include Dlink Di-8100 Firmware.
How do I fix CVE-2026-7853?
No fix has been published for CVE-2026-7853 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-2026-7853 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7853 exists.
Other vulnerabilities in D-Link DI-8100
- CVE-2025-44083 Auth bypass in n/a
- 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
- CVE-2025-7908 D-Link DI-8100 jhttpd ddns.asp sprintf stack-based overflow
Sources
Also known as GHSA-mrhg-43m6-jq5j.