CVE-2025-61577 Memory corruption in n/a

High 7.5 Published 9 Oct 2025 Updated 9 Oct 2025

Attackers can cause a denial of service on D-Link DIR-816A2 routers via a stack overflow in the WAN WiFi configuration function.

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-2025-61577?

CVE-2025-61577 is a high-severity memory corruption vulnerability in Dlink Dir-816 Firmware, published on 9 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

D-Link DIR-816A2_FWv1.10CNB05 was discovered to contain a stack overflow via the statuscheckpppoeuser parameter in the dir_setWanWifi function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Weakness: CWE-121

Which versions are affected by CVE-2025-61577?

It affects 1 product.

Products include Dlink Dir-816 Firmware.

How do I fix CVE-2025-61577?

No fix has been published for CVE-2025-61577 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-2025-61577 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-61577 exists.

All Dlink Dir-816 Firmware vulnerabilities

Sources

Also known as GHSA-72cr-6q6w-frg8.