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Rt Ax88u FirmwareOperating system · Asus

CVE-2023-34360

MEDIUM · 5.4 CVSS v3.1 Published 2023-07-31
Fix available
A fix is available. Upgrade to after 3.0.0.4.388.23110 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A stored cross-site scripting (XSS) issue was discovered within the Custom User Icons functionality of ASUS RT-AX88U running firmware versions 3.0.0.4.388.23110 and prior.  After a remote attacker logging in device with regular user privilege, the remote attacker can perform a Stored Cross-site Scripting (XSS) attack by uploading image which containing JavaScript code.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A stored cross-site scripting vulnerability exists in the Custom User Icons functionality of ASUS RT-AX88U routers running firmware 3.0.0.4.388.23110 and prior. An authenticated attacker with regular user privileges can embed JavaScript code into an uploaded image file, which then executes when other users view the malicious icon.

MitigationUpdate the ASUS RT-AX88U firmware to a version newer than 3.0.0.4.388.23110. Until patched, restrict access to the device management interface and monitor for unusual icon uploads.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Rt Ax88u FirmwareOperating system
Affected:<= 3.0.0.4.388.23110

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm router model is ASUS RT-AX88U
    Access the router web interface and check the model name in System Log or Device Info page, or run 'nvram get model' via SSH/Telnet if enabled
    Affected if Model is not RT-AX88U (not affected)
  2. Check installed firmware version
    Navigate to Administration > Firmware Upgrade or check the status page for the current firmware version. Compare against 3.0.0.4.388.23110
    Affected if Firmware version is 3.0.0.4.388.23110 or lower (vulnerable)
  3. Verify web management interface is accessible
    Attempt to access the router's web interface at the default gateway IP (typically 192.168.1.1)
    Affected if Web interface is accessible from network (required for exploitation)
  4. Check if Custom User Icons feature exists
    Log into the router web interface and navigate to User Management or Account settings to locate the Custom User Icon upload functionality
    Affected if Custom User Icons feature is present and accessible to standard users (exploitation path exists)

A user is affected if they are running an ASUS RT-AX88U router with firmware version 3.0.0.4.388.23110 or lower, and the web management interface with Custom User Icons feature is accessible.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 3.0.0.4.388.23110
Interim mitigation

Update the ASUS RT-AX88U firmware to a version newer than 3.0.0.4.388.23110. Until patched, restrict access to the device management interface and monitor for unusual icon uploads.

Recommended fix Moderate confidence

Latest ASUS RT-AX88U firmware version (newer than 3.0.0.4.388.23110)

  1. 1. Visit the official ASUS support website and navigate to the RT-AX88U product page.
  2. 2. Download the latest available firmware version for the RT-AX88U router.
  3. 3. Access the router's web administration interface by entering the router's IP address in a web browser.
  4. 4. Log in with administrator credentials.
  5. 5. Navigate to the 'Firmware Upgrade' or 'Administration' section in the router settings.
  6. 6. Select the option to upgrade firmware using the downloaded file.
  7. 7. Wait for the firmware upload and installation to complete - do not power off the router during this process.
  8. 8. After the router restarts, verify the new firmware version is installed.
Caveat Standard firmware upgrade risk applies - ensure stable power during upgrade to avoid router brickage; backup configuration if possible

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Rt Ax88u Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-34360 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data