CVE-2026-84730: ASUS Router stack-based buffer overflow in AiCloud

CVE-2026-84730 · Severity: info · Published 2026-11-04

A stack-based buffer overflow vulnerability exists in ASUS router firmware's AiCloud feature that allows an unauthenticated attacker within wireless range to execute arbitrary commands with root privileges by sending a crafted device name. This gives attackers complete control over the router, potentially allowing them to intercept network traffic, modify traffic, or use the router as a foothold for further attacks.

Technologies: ASUS Router Firmware. Vendors: ASUS.

Quick answers

Is CVE-2026-84730 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-84730 being exploited in the wild.
How severe is CVE-2026-84730?
Informational severity, published 4 November 2026.
Which products and versions are affected?
ASUS Router Firmware certain versions.
Is there a fix for CVE-2026-84730?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-84730 attacked?
It is attacked from the adjacent network or over the network, in device firmware.
Am I affected by CVE-2026-84730?
Check whether you run ASUS Router Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a stack-based buffer overflow in the AiCloud feature of certain ASUS router firmware versions, triggered via a maliciously crafted device name parameter. An unauthenticated attacker with adjacent network access can exploit this flaw without authentication to achieve remote code execution with root privileges. A patch is available from ASUS.

Affected products

  • ASUS Router firmware certain versions

Timeline

  • 2026-11-04: disclosed

References

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