CVE-2026-4555 D-Link DIR-513 boa formEasySetTimezone memory corruption

High 8.7 Published 22 Mar 2026 Updated 23 Mar 2026

Remote attackers can exploit a stack-based buffer overflow in the D-Link DIR-513 router's timezone setting to execute arbitrary 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-2026-4555?

CVE-2026-4555 is a high-severity memory corruption vulnerability in D-Link DIR-513, published on 22 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A weakness has been identified in D-Link DIR-513 1.10. The impacted element is the function formEasySetTimezone of the file /goform/formEasySetTimezone of the component boa. This manipulation of the argument curTime causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. 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-2026-4555?

It affects 1 product.

Products include Dlink Dir-513 Firmware.

How do I fix CVE-2026-4555?

No fix has been published for CVE-2026-4555 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-2026-4555 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4555 exists.

Sources

Also known as GHSA-fwg7-xgp7-84j9.