CVE-2026-5979 D-Link DIR-605L POST Request formVirtualServ buffer overflow

High 8.7 Published 9 Apr 2026 Updated 10 Apr 2026

Remote attackers can trigger a buffer overflow in the D-Link DIR-605L router via a crafted POST request, potentially leading to code execution or 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-2026-5979?

CVE-2026-5979 is a high-severity memory corruption vulnerability in Dlink Dir-605l Firmware, published on 9 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was detected in D-Link DIR-605L 2.13B01. Affected by this vulnerability is the function formVirtualServ of the file /goform/formVirtualServ of the component POST Request Handler. The manipulation of the argument curTime results in buffer overflow. The attack can be launched remotely. The exploit is now public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2026-5979?

It affects 1 product.

Products include Dlink Dir-605l Firmware.

How do I fix CVE-2026-5979?

No fix has been published for CVE-2026-5979 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-2026-5979 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5979 exists.

All Dlink Dir-605l Firmware vulnerabilities

Sources

Also known as GHSA-8w3p-hgjr-h6h4.