CVE-2026-67862: High severity 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
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2026-67862?
CVE-2026-67862 has a risk score of 26, indicating a serious vulnerability.
2
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.
3
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.
4
Is CVE-2026-67862 specific to any version of open62541?
Yes, CVE-2026-67862 specifically affects open62541 version 1.5.5.
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.