Buffer Overflow Vulnerability in open62541 by open62541 Community
CVE-2026-67869

7.5HIGH

Key Information:

Vendor: open62541 Community
Status: open62541
Vendor: CVE Published:; 5 August 2026

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What is CVE-2026-67869?

A buffer overflow vulnerability exists in open62541 v1.5.5 that allows remote attackers to exploit improperly validated input arguments against runtime-resolved InputArguments metadata. This flaw could result in a denial of service, potentially affecting the functionality of the server by causing it to become unresponsive.

References

https://github.com/open62541/open62541/issues/8171

https://github.com/open62541/open62541/blob/v1.5.5/src/se...

CVSS V3.1

Score:

7.5

Severity:

HIGH

Confidentiality:

None

Integrity:

None

Availability:

None

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

None

Scope:

Unchanged

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Timeline

Vulnerability published
Aug 5, 2026
Vulnerability Reserved
Jul 30, 2026

CVE-2026-67869 Data

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