Stack-Based Buffer Overflow in Advantech's File Process Function
CVE-2026-43856

8.6HIGH

Key Information:

Vendor

Advantech
Status
Adam-3600
Vendor
CVE Published:
20 October 2026

What is CVE-2026-43856?

A stack-based buffer overflow vulnerability exists in the FileProcess::CheckDir function within Advantech's FileProcess. This flaw allows a remote authenticated attacker to exploit the vulnerability by sending a specially crafted path that exceeds 1024 bytes, potentially leading to arbitrary code execution on the affected system. It is crucial for users of affected products to apply the necessary updates to mitigate this risk.

Affected Version(s)

ADAM-3600 prior to version 2.8.5.0

References

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-20...
https://www.advantech.com/en/security-advisory
vendor-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Simone Bossi and Raffaele Bova at Nozomi Networks
.