CVE-2025-8826 Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 RP_setBasicAuto um_rp_autochannel stack-based overflow

High 8.7 Published 11 Aug 2025 Updated 12 Aug 2025

Remote attackers can trigger a stack-based buffer overflow in Linksys range extenders via crafted authentication mode parameters, potentially leading to code execution or device crashes.

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-2025-8826?

CVE-2025-8826 is a high-severity memory corruption vulnerability in Linksys Re6250 Firmware, published on 11 Aug 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability has been found in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. This vulnerability affects the function um_rp_autochannel of the file /goform/RP_setBasicAuto. The manipulation of the argument apcli_AuthMode_2G/apcli_AuthMode_5G leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2025-8826?

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-2025-8826?

No fix has been published for CVE-2025-8826 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-2025-8826 being exploited?

There is no known exploitation of CVE-2025-8826 in the wild and no public exploit code.

All Linksys Re6250 Firmware vulnerabilities

Sources

Also known as GHSA-59pv-5632-9hfr.