Bug 2437160 (CVE-2026-1301) - CVE-2026-1301 open62541: Out-of-bounds Write in o6 Automation GmbH Open62541
Summary: CVE-2026-1301 open62541: Out-of-bounds Write in o6 Automation GmbH Open62541
Keywords:
Status: NEW
Alias: CVE-2026-1301
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2437443 2437445
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-05 20:01 UTC by OSIDB Bzimport
Modified: 2026-04-20 18:22 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-02-05 20:01:19 UTC 
In builds with PubSub and JSON enabled, a crafted JSON message can cause the decoder to write beyond a heap-allocated array before authentication, reliably crashing the process and corrupting memory.
Comment 2 Peter Robinson 2026-04-20 18:22:23 UTC 
Was only in the follow RC releases: Open62541 >=1.5-rc1|<1.5-rc2 (CVE-2026-1301)
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