High severity · published Jul 30, 2026
CVE-2026-67248
A stack-based buffer overflow vulnerability was found in the File Explorer on the ADM
8.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
ADM · ASUSTOR Inc.
5.0.0 through 5.1.3.RI81; 4.1.0 through 4.3.3.RUN1 · source: vendor
DM
Data Master · Asustor
4.1.0.rhu2 through 4.3.3.run1; 5.0.0.ra82 before 5.1.4.rjv2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-67248
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-67248
Vendor Advisory
https://www.asustor.com/security/security_advisory_detail?id=69
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