Bug 2511270 (CVE-2026-67858) - CVE-2026-67858 open62541: open62541: Denial of Service via buffer overflow in Local Discovery Server
Summary: CVE-2026-67858 open62541: open62541: Denial of Service via buffer overflow in...
Keywords:
Status: NEW
Alias: CVE-2026-67858
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2511509
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-04 22:02 UTC by OSIDB Bzimport
Modified: 2026-08-05 13:00 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-08-04 22:02:46 UTC 
Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server (LDS) is built with multicast discovery enabled through the MDNSD backend. An unauthenticated remote attacker can send a RegisterServer or RegisterServer2 request containing many unique discoveryUrls. This allows remote attackers to cause a denial of service.
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