CVE-2026-43840 - Vulnerability Details - OpenCVE

A NULL pointer dereference vulnerability in the license manager service could allow an unauthenticated attacker to crash the service via the on_disconnected callback function.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Advantech	Adam-3600

No data.

No data.

References

Link	Providers
https://www.advantech.com/en/security-advisory
https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149

History

Tue, 20 Oct 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 20 Oct 2026 16:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Advantech Advantech adam-3600
Vendors & Products		Advantech Advantech adam-3600

Tue, 20 Oct 2026 16:00:00 +0000

Type	Values Removed	Values Added
Title		Null Pointer Dereference Causing Service Crash in Advantech ADAM-3600 License Manager
Weaknesses		CWE-476

Tue, 20 Oct 2026 12:45:00 +0000

Type	Values Removed	Values Added
Description		A NULL pointer dereference vulnerability in the license manager service could allow an unauthenticated attacker to crash the service via the on_disconnected callback function.
References		https://www.advantech.com/en/security-advisory https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149
Metrics		cvssV4_0 `{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: CSA

Published: 2026-10-20T08:28:32.330Z

Updated: 2026-10-29T12:10:14.990Z

Reserved: 2026-05-04T03:13:39.244Z

Link: CVE-2026-43840

Vulnrichment

Updated: 2026-10-20T18:07:41.774Z

NVD

Status : Deferred

Published: 2026-10-20T09:17:10.383

Modified: 2026-10-29T13:17:11.867

Link: CVE-2026-43840

Redhat

No data.

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