VULNERABILITY INTELLIGENCE

CVE-2026-67858

CVSS score7.5 HIGH
EPSS probability0.86%
CISA KEVNot currently listed
Published2026-08-04
Last modified2026-08-31
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-120

Primary references