CVE-2022-26673Network attack vector

Authenticated script execution via unfiltered HTTP header

Published Apr 22, 2022 · Updated Sep 17, 2024

Stored cross-site scripting in ASUS RT-AX88U firmware before 3.0.0.4.386.46065 allows remote authenticated users to execute JavaScript. The web interface stores an HTTP-header parameter without adequately filtering special characters, but ASUS has not identified the header or handler. General user privileges and victim interaction are required; the script can read or alter data available in the victim's browser context.

CVSS severity5.4
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored cross-site scripting in ASUS RT-AX88U firmware before 3.0.0.4.386.46065 allows remote authenticated users to execute JavaScript. The web interface stores an HTTP-header parameter without adequately filtering special characters, but ASUS has not identified the header or handler. General user privileges and victim interaction are required; the script can read or alter data available in the victim's browser context.

The record

CVE
CVE-2022-26673
Published
Apr 22, 2022
Updated
Sep 17, 2024
Vendor
ASUSTeK Computer Inc.
Product
RT-AX88U
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <3.0.0.4.386.4606

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ASUSTeK Computer Inc. · RT-AX88Uversion=unspecified <3.0.0.4.386.4606

Published CVSS scores

5.4TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo