CVE-2026-67862: Open62541 open62541 vulnerability

Published Aug 4, 2026

Updated

open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/uaclienthighlevel.c. This allows a remote attacker to cause a denial of service.

Affected Software

1 affected component

open62541 open62541=1.5.5

Event History

Aug 4, 2026

CVE Published

via MITRE·12:00 AM

Data Sourced

via MITRE·12:00 AM

Description

Data Sourced

via NVD·10:17 PM

Description

Frequently Asked Questions

What is the severity of CVE-2026-67862?

CVE-2026-67862 has a risk score of 26, indicating a serious vulnerability.

How do I fix CVE-2026-67862?

To fix CVE-2026-67862, update open62541 to a version higher than 1.5.5 that addresses this buffer overflow issue.

What impact does CVE-2026-67862 have on systems?

CVE-2026-67862 can lead to a denial of service if exploited by a remote attacker.

Is CVE-2026-67862 specific to any version of open62541?

Yes, CVE-2026-67862 specifically affects open62541 version 1.5.5.

How does the buffer overflow in CVE-2026-67862 occur?

The buffer overflow in CVE-2026-67862 occurs within the high-level attribute reading logic in src/client/ua_client_highlevel.c.

CVE-2026-67862: Open62541 open62541 vulnerability

Affected Software

Event History

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Frequently Asked Questions

What is the severity of CVE-2026-67862?

How do I fix CVE-2026-67862?

What impact does CVE-2026-67862 have on systems?

Is CVE-2026-67862 specific to any version of open62541?

How does the buffer overflow in CVE-2026-67862 occur?

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Frequently Asked Questions

What is the severity of CVE-2026-67862?

How do I fix CVE-2026-67862?

What impact does CVE-2026-67862 have on systems?

Is CVE-2026-67862 specific to any version of open62541?

How does the buffer overflow in CVE-2026-67862 occur?