CVE-2025-25899 Denial of service in n/a

Low 3.5 Published Updated

Attackers can cause a Denial of Service on TP-Link TL-WR841ND V11 routers by sending crafted packets to the WAN IPv6 configuration page.

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-2025-25899?

CVE-2025-25899 is a low-severity denial of service vulnerability in n/a, published on 13 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A buffer overflow vulnerability was discovered in TP-Link TL-WR841ND V11 via the 'gw' parameter at /userRpm/WanDynamicIpV6CfgRpm.htm. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted packet.

Weakness: CWE-404

Which versions are affected by CVE-2025-25899?

It affects 1 product.

Products include Tp-Link Tl-Wr841nd V11 Firmware.

How do I fix CVE-2025-25899?

No fix has been published for CVE-2025-25899 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-25899 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-25899 exists.

Sources

Also known as GHSA-wp6r-c52j-pjff.

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