ASUS Router out-of-bounds write

Summaryinfo

A vulnerability described as very critical has been identified in ASUS Router. Affected is an unknown function. Such manipulation leads to out-of-bounds write. This vulnerability is documented as CVE-2026-84729. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in ASUS Router (unknown version). It has been rated as very critical. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Out-of-bounds write in certain ASUS Router firmware allow an unauthenticated nearby attacker to write data beyond the intended buffer or potentially cause a denial-of-service (DoS) via a crafted packet. Refer to the '  Security Update for ASUS Router Firmware  ' section on the ASUS Security Advisory for more information.

The advisory is available at asus.com. This vulnerability is handled as CVE-2026-84729 since 09/02/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/04/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Router Operating System

Vendor

• ASUS

Name

• Router

License

• commercial

Website

• Vendor: https://www.asus.com/

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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