CVE-2026-6643

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

State
Published
Severity
8.6 High
Published
Apr 20, 2026
Updated
Apr 20, 2026
Reserved
Apr 20, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.08.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:LASUSTOR1

Weaknesses

  • CWE-121 Stack-based buffer overflow

Affected Products

ProductVersions
ADMASUSTOR Inc.
  • 4.1.0 through 4.3.3.RR42Affected
  • 5.0.0 through 5.1.2.REO1Affected

References

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