CVE-2025-57623 Null dereference in n/a

Medium 5.3 Published Updated

A NULL pointer dereference in TOTOLINK N600R firmware allows attackers to cause a Denial of Service.

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-2025-57623?

CVE-2025-57623 is a medium-severity vulnerability in n/a, published on 25 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A NULL pointer dereference in TOTOLINK N600R firmware v4.3.0cu.7866_B2022506 allows attackers to cause a Denial of Service.

Weakness: CWE-476

Which versions are affected by CVE-2025-57623?

It affects 1 product.

Products include Totolink N600r Firmware.

How do I fix CVE-2025-57623?

No fix has been published for CVE-2025-57623 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-57623 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-57623 exists.

Sources

Also known as GHSA-6wx9-5wq9-rr87.

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