CVE-2026-12174 D-Link DCS-935L HTTP rhea snprintf format string

High 8.7 Published 13 Jun 2026 Updated 15 Jun 2026

Remote attackers can exploit a format string vulnerability in the D-Link DCS-935L HTTP handler to potentially execute code or cause denial of service.

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-2026-12174?

CVE-2026-12174 is a high-severity vulnerability in D-Link DCS-935L, published on 13 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A security vulnerability has been detected in D-Link DCS-935L 1.10.01. This issue affects the function snprintf of the file /web/cgi-bin/greece/rhea of the component HTTP Handler. Such manipulation of the argument data leads to format string. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.

Weakness: CWE-134, CWE-119

Which versions are affected by CVE-2026-12174?

It affects 1 product.

Products include Dlink Dcs-935l Firmware.

How do I fix CVE-2026-12174?

No fix has been published for CVE-2026-12174 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-12174 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12174 exists.

Sources

Also known as GHSA-hchg-fqww-5488.