2509643 – (CVE-2026-65423) CVE-2026-65423 open62541: open62541: Out-of-bounds write via integer overflow

Bug 2509643 (CVE-2026-65423) - CVE-2026-65423 open62541: open62541: Out-of-bounds write via integer overflow

Summary: CVE-2026-65423 open62541: open62541: Out-of-bounds write via integer overflow

Keywords:
Status:	NEW
Alias:	CVE-2026-65423
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	high
Severity:	high
Target Milestone:	---
Assignee:	Product Security DevOps Team
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:	2509790
Blocks:
TreeView+	depends on / blocked

Reported:	2026-07-30 23:01 UTC by OSIDB Bzimport
Modified:	2026-07-31 14:55 UTC (History)
CC List:	0 users
Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments	(Terms of Use)

Description OSIDB Bzimport 2026-07-30 23:01:28 UTC

An integer overflow in the UA_Variant arrayDimensions product 
computation in open62541 may allow a remote attacker to trigger an 
out-of-bounds write.

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