This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-67858 →
DEBIAN-CVE-2026-67858
Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server (LDS) is built with multicast discovery enabled through the MD...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:13
open62541
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14
open62541
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
References
- advisory security-tracker.debian.org