{"id":"UBUNTU-CVE-2026-67857","details":"open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.","modified":"2026-08-06T03:11:25.500250907Z","published":"2026-08-04T22:17:00Z","upstream":["CVE-2026-67857"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-67857"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-67857"},{"type":"REPORT","url":"https://github.com/open62541/open62541/issues/8104"},{"type":"REPORT","url":"https://github.com/gff-cw/information/issues/9"},{"type":"REPORT","url":"https://github.com/open62541/open62541/blob/v1.5.5/examples/client_connect.c"},{"type":"REPORT","url":"https://github.com/open62541/open62541/blob/v1.5.5/examples/client_connect_loop.c"},{"type":"REPORT","url":"https://github.com/open62541/open62541/blob/v1.5.5/src/client/ua_client_connect.c"}],"affected":[{"package":{"name":"open62541","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/open62541?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.11.1-1","1.4.11.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopen62541-1.4","binary_version":"1.4.11.1-1build1"},{"binary_name":"libopen62541-1.4-tools","binary_version":"1.4.11.1-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67857.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}