CVE-2026-67859
- State
- Published
- Severity
- 7.5 High
- Published
- Aug 4, 2026
- Updated
- Aug 5, 2026
- Reserved
- Jul 30, 2026
Description
Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N | mitre |
Weaknesses
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- 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/issues/8095
- https://github.com/open62541/open62541/blob/master/examples/discovery/server_lds.c
- https://github.com/open62541/open62541/blob/master/src/util/ua_util.c
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