CVE-2025-14136 Linksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 mod_form.so stack-based overflow

High 8.7 Published 6 Dec 2025 Updated 8 Dec 2025

Remote attackers can trigger a stack-based buffer overflow in Linksys range extenders to execute arbitrary code, with no vendor fix available.

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-2025-14136?

CVE-2025-14136 is a high-severity memory corruption vulnerability in Linksys Re6250 Firmware, published on 6 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A security flaw has been discovered in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. This vulnerability affects the function RE2000v2Repeater_get_wired_clientlist_setClientsName of the file mod_form.so. The manipulation of the argument clientsname_0 results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be exploited. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-121, CWE-787, CWE-119

Which versions are affected by CVE-2025-14136?

It affects 6 products.

Products include Linksys Re6250 Firmware, Linksys Re6300 Firmware, Linksys Re6350 Firmware, Linksys Re6500 Firmware, Linksys Re7000 Firmware, Linksys Re9000 Firmware.

How do I fix CVE-2025-14136?

No fix has been published for CVE-2025-14136 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-2025-14136 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-14136 exists.

All Linksys Re6250 Firmware vulnerabilities

Sources

Also known as GHSA-4hrq-qfmm-86p6.