CVE-2026-67248 A stack-based buffer overflow vulnerability was found in the File Explorer on the ADM

High 8.7 Published 30 Jul 2026 Updated 4 Aug 2026

An authenticated attacker can cause denial of service in the File Explorer CGI process via a stack-based buffer overflow in ASUSTOR ADM.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-67248?

CVE-2026-67248 is a high-severity memory corruption vulnerability in ASUSTOR Inc. ADM, published on 30 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A stack-based buffer overflow vulnerability was found in the File Explorer on the ADM. The vulnerability occurs because user-controlled input is not properly validated before being decoded and copied into a fixed-size stack buffer. An authenticated attacker can exploit this issue to cause denial of service of the affected CGI process. Further impact may be possible depending on exploitability and runtime protections. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RUN1 as well as from ADM 5.0.0 through ADM 5.1.3.RI81.

Weakness: CWE-121

Which versions are affected by CVE-2026-67248?

It affects 1 product.

Products include Asustor Data Master.

How do I fix CVE-2026-67248?

No fix has been published for CVE-2026-67248 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-67248 being exploited?

There is no known exploitation of CVE-2026-67248 in the wild and no public exploit code.

Sources

Also known as GHSA-phvr-wwmj-5cr2.