CVE-2025-25740 Memory corruption in n/a

Medium 5.5 Published Updated

A stack-based buffer overflow in the D-Link DIR-853 router allows attackers to execute arbitrary code or cause a denial of service via the PSK parameter.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2025-25740?

CVE-2025-25740 is a medium-severity memory corruption vulnerability in n/a, published on 14 Feb 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

D-Link DIR-853 A1 FW1.20B07 was discovered to contain a stack-based buffer overflow vulnerability via the PSK parameter in the SetQuickVPNSettings module.

Weakness: CWE-121

Which versions are affected by CVE-2025-25740?

It affects 1 product.

Products include Dlink Dir-853 Firmware.

How do I fix CVE-2025-25740?

No fix has been published for CVE-2025-25740 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-2025-25740 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-25740 exists.

Sources

Also known as GHSA-9rhh-9h7r-f9gf.

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