PT-2026-33722 · Asustor · Adm

Yu-Xiang Huang · Published 2026-04-20 · Updated 2026-04-20 · CVE-2026-6643

NVD

CVSS v4.0

8.6

High

AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-6643

Affected Products

Adm

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-6643 · Security Note
• https://asustor.com/security/security_advisory_detail?id=54 · Vendor Advisory