Description
open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.
Published: 2026-08-04
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 05 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 05 Aug 2026 16:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-121

Wed, 05 Aug 2026 12:15:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in Open62541 High-Level Attribute Reading Causing DoS open62541: open62541: Denial of Service via buffer-overflow
Weaknesses CWE-120
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important


Wed, 05 Aug 2026 00:00:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in Open62541 High-Level Attribute Reading Causing DoS
Weaknesses CWE-121

Tue, 04 Aug 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Open62541
Open62541 open62541
Vendors & Products Open62541
Open62541 open62541

Tue, 04 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
Description open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.
References

Subscriptions

Open62541 Open62541
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-05T18:29:29.087Z

Reserved: 2026-07-30T00:00:00.000Z

Link: CVE-2026-67862

cve-icon Vulnrichment

Updated: 2026-08-05T18:29:24.617Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-04T00:00:00Z

Links: CVE-2026-67862 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-05T20:30:06Z

Weaknesses