High severity7.5NVD Advisory· Published Aug 4, 2026· Updated Aug 31, 2026
CVE-2026-67857
CVE-2026-67857
Description
open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.
Affected products
1Patches
Vulnerability mechanics
References
5- github.com/gff-cw/information/issues/9nvd
- github.com/open62541/open62541/blob/v1.5.5/examples/client_connect.cnvd
- github.com/open62541/open62541/blob/v1.5.5/examples/client_connect_loop.cnvd
- github.com/open62541/open62541/blob/v1.5.5/src/client/ua_client_connect.cnvd
- github.com/open62541/open62541/issues/8104nvd
News mentions
1- Open62541: 14 Critical and High-Severity Vulnerabilities Disclosed TogetherVypr Intelligence · Aug 6, 2026