CVE-2025-45845 Memory corruption in n/a

High 8.8 Published Updated

An authenticated attacker can trigger a stack overflow in the TOTOLINK NR1800X router via the ssid5g parameter, potentially leading to code execution.

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-2025-45845?

CVE-2025-45845 is a high-severity memory corruption vulnerability in n/a, published on 8 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

TOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the ssid5g parameter in the setWiFiEasyGuestCfg function.

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2025-45845?

It affects 1 product.

Products include Totolink Nr1800x Firmware.

How do I fix CVE-2025-45845?

No fix has been published for CVE-2025-45845 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-2025-45845 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-45845 exists.

Sources

Also known as GHSA-w7v2-r8f5-7h23.

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