CVEvulnerability
CVE-2026-67858
7.5 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-08-04
- Last modified
- 2026-08-31
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-120
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.
Related
Weakness · CWE (1)
- CWE-120 Buffer Copy without Checking Size of Input weakness
References
- https://github.com/open62541/open62541/blob/master/doc/building.rst github.com
- https://github.com/open62541/open62541/blob/master/src/server/ua_discovery_mdns.c github.com
- https://github.com/open62541/open62541/blob/master/src/server/ua_services_discovery.c github.com
- https://github.com/open62541/open62541/issues/8094 github.com
- https://github.com/open62541/open62541/tree/master/examples/discovery github.com
- https://github.com/open62541/open62541/issues/8094 github.com