CVE-2022-26376 Memory corruption in Asuswrt-Merlin New Gen

Medium 5.3 Published 5 Aug 2022 Updated 15 Apr 2025

A memory corruption flaw in Asuswrt httpd allows remote attackers to execute arbitrary code or cause denial of service via crafted HTTP requests.

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-2022-26376?

CVE-2022-26376 is a medium-severity memory corruption vulnerability in Asuswrt-Merlin New Gen, published on 5 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A memory corruption vulnerability exists in the httpd unescape functionality of Asuswrt prior to 3.0.0.4.386_48706 and Asuswrt-Merlin New Gen prior to 386.7.. A specially-crafted HTTP request can lead to memory corruption. An attacker can send a network request to trigger this vulnerability.

Weakness: CWE-787

Which versions are affected by CVE-2022-26376?

It affects 19 products.

Products include Asus Asuswrt, Asus Et12 Firmware, Asus Gt-Ax11000 Firmware, Asus Gt-Ax11000 Pro Firmware, Asus Gt-Ax6000 Firmware, Asus Gt-Axe16000 Firmware and 13 more.

How do I fix CVE-2022-26376?

No fix has been published for CVE-2022-26376 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-2022-26376 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-26376 exists.

Sources

Also known as GHSA-5v6f-j685-6xv8.