What’s Vulnerable › Vulnerabilities

CVE-2026-67859

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-04 · updated 2026-09-03
• Weakness: CWE-120

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/blob/master/examples/discovery/server_lds.c
• https://github.com/open62541/open62541/blob/master/src/server/ua_discovery_mdns.c
• https://github.com/open62541/open62541/blob/master/src/server/ua_services_discovery.c
• https://github.com/open62541/open62541/blob/master/src/util/ua_util.c
• https://github.com/open62541/open62541/issues/8095
• https://github.com/open62541/open62541/issues/8095

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