Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Service_Call validates input arguments against runtime-resolved InputArguments metadata

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

No data.

No data.

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Vendors Products
Open62541 Subscribe
Open62541 Subscribe

Project Subscriptions

Vendors Products
Open62541 Subscribe
Open62541 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/open62541/open62541/blob/v1.5.5/examples/tutorial_server_alarms_conditions.c cve-icon
https://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_method.c cve-icon
https://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_subscription_alarms_conditions.c cve-icon
https://github.com/open62541/open62541/issues/8171 cve-icon
History

Thu, 06 Aug 2026 01:15:00 +0000

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

Thu, 06 Aug 2026 00:45:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in open62541 1.5.5 Enables Remote DoS via Service_Call
Weaknesses CWE-120
CWE-787

Wed, 05 Aug 2026 23:30:00 +0000

Type Values Removed Values Added
Description Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Service_Call validates input arguments against runtime-resolved InputArguments metadata
References
Metrics cvssV3_1

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-05T23:04:10.592Z

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

Link: CVE-2026-67869

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-06T01:15:02Z

Weaknesses