CVE-2026-4486 D-Link DIR-513 Web Service formEasySetPassword stack-based overflow

High 8.7 Published 20 Mar 2026 Updated 20 Mar 2026

Remote attackers can execute arbitrary code via a stack-based buffer overflow in the D-Link DIR-513 web service, affecting unsupported devices.

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-2026-4486?

CVE-2026-4486 is a high-severity memory corruption vulnerability in D-Link DIR-513, published on 20 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was found in D-Link DIR-513 1.10. This affects the function formEasySetPassword of the file /goform/formEasySetPassword of the component Web Service. The manipulation of the argument curTime results in stack-based buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-121, CWE-787, CWE-119

Which versions are affected by CVE-2026-4486?

It affects 1 product.

Products include Dlink Dir-513 Firmware.

How do I fix CVE-2026-4486?

No fix has been published for CVE-2026-4486 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-2026-4486 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4486 exists.

Sources

Also known as GHSA-gpc6-qqr6-4rpw.