CVE-2026-6643 — A stack-based buffer overflow vulnerability in the VPN Clients on the ADM

CVE-2026-6643

A stack-based buffer overflow vulnerability in the VPN Clients on the ADM PUBLISHED

Description (CNA)

A stack-based buffer overflow vulnerability was found in the VPN Clients on the ADM. The issue stems from the use of unbounded sscanf() and passing user-controlled data directly to printf(). Due to the lack of PIE and Stack Canary protections, an authenticated remote attacker can exploit these to execute arbitrary code as the web server user. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RR42 as well as from ADM 5.0.0 through ADM 5.1.2.REO1.

Affected (CNA)

Vendor / product	Versions
ASUSTOR Inc. / ADM	affected 4.1.0 through 4.3.3.RR42; affected 5.0.0 through 5.1.2.REO1

CWE

CWE-121

References

https://www.asustor.com/security/security_advisory_detail?id=54

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.