NULL Pointer Dereference Vulnerability in Advantech License Manager Service
CVE-2026-43840

6.9MEDIUM

Key Information:

Vendor

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

What is CVE-2026-43840?

A NULL pointer dereference vulnerability in Advantech's License Manager Service could be exploited by an unauthenticated attacker to trigger a crash of the service. This occurs during the execution of the on_disconnected callback function, which processes disconnection events. Such vulnerabilities can lead to service disruptions, making it essential for users and administrators to assess their exposure and implement necessary updates to mitigate potential risks.

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:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
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
.