CVE-2022-26673: ASUS RT-AX88U - Stored XSS

Severity: low (CVSS 3.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-04-22 · updated 2026-06-17
Weakness: CWE-79

Description

ASUS RT-AX88U has insufficient filtering for special characters in the HTTP header parameter. A remote attacker with general user privilege can exploit this vulnerability to inject JavaScript and perform Stored Cross-Site Scripting (XSS) attacks.

Affected products

ASUS RT-AX88U: before 3.0.0.4.386.46065 — fixed in 3.0.0.4.386.46065

How to fix

Upgrade to a fixed version: ASUS RT-AX88U 3.0.0.4.386.46065. Check the vendor advisory for mitigations.

References

https://www.twcert.org.tw/tw/cp-132-6042-6cc0f-1.html
https://www.twcert.org.tw/tw/cp-132-6042-6cc0f-1.html

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