CVE-2025-7206 D-Link DIR-825 httpd switch_language.cgi sub_410DDC stack-based overflow

Critical 9.3 Published 8 Jul 2025 Updated 9 Jul 2025

Remote attackers can trigger a stack-based buffer overflow in the D-Link DIR-825 router's web interface, potentially executing arbitrary code or causing a crash.

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-2025-7206?

CVE-2025-7206 is a critical memory corruption vulnerability in D-Link DIR-825, published on 8 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability, which was classified as critical, has been found in D-Link DIR-825 2.10. This issue affects the function sub_410DDC of the file switch_language.cgi of the component httpd. The manipulation of the argument Language leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2025-7206?

It affects 1 product.

Products include Dlink Dir-825 Firmware.

How do I fix CVE-2025-7206?

No fix has been published for CVE-2025-7206 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-2025-7206 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7206 exists.

Sources

Also known as GHSA-9hvp-4vhx-8m87.