CVE-2026-67859

high

Description

Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling.

References

https://github.com/open62541/open62541/issues/8095

https://github.com/open62541/open62541/blob/master/src/util/ua_util.c

https://github.com/open62541/open62541/blob/master/src/server/ua_services_discovery.c

https://github.com/open62541/open62541/blob/master/src/server/ua_discovery_mdns.c

https://github.com/open62541/open62541/blob/master/examples/discovery/server_lds.c

Details

Source: Mitre, NVD

Published: 2026-08-04

Updated: 2026-08-04

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High