Buffer overflow in Asustor Data Master
CVE-2026-67248
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.
Vulnerability class: Buffer Overflow
EPSS: 0.003 (20.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Asustor Data_master
- Asustor Inc. Adm — versions 5.0.0, 4.1.0
Weakness classification (CWE)
References
- security@asustor.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-67248?
- CVE-2026-67248 is a high-severity vulnerability in Asustor Data Master, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-07-30.
- How severe is CVE-2026-67248?
- High severity. CVSS v3 base score is 8.8 out of 10.