{"id":"CVE-2026-67862","aliases":["DEBIAN-CVE-2026-67862","EUVD-2026-52996","GHSA-vqxw-7v8h-rvf2","UBUNTU-CVE-2026-67862"],"status":"published","title":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src...","description":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00582,"percentile":0.48069,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2026-08-04T00:00:00Z","modified":"2026-10-17T12:56:41Z","affected":[{"source":"osv","ecosystem":"Debian:13","package":"open62541","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.11.1-1","1.4.18-1"]},{"source":"osv","ecosystem":"Debian:14","package":"open62541","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.11.1-1","1.4.18-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"open62541","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.11.1-1build1","1.4.18-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"open62541","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.11.1-1","1.4.11.1-1build1"]}],"references":[{"url":"https://github.com/open62541/open62541/issues/8139","tags":["exploit","report"]},{"url":"https://github.com/open62541/open62541/blob/v1.5.5/src/client/ua_client_highlevel.c","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67862"},{"url":"https://github.com/advisories/GHSA-vqxw-7v8h-rvf2"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-67862","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-67862","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-67862","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-67862","description":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.","status":"published","published":"2026-08-04T00:00:00Z","modified":"2026-08-05T18:29:29.087Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-52996","description":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.","status":"published","published":"2026-08-04T00:00:00Z","modified":"2026-08-05T18:29:29Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:02:09.520152Z"}],"ghsa":[{"id":"GHSA-vqxw-7v8h-rvf2","title":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src...","description":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.","status":"published","published":"2026-08-05T00:30:39Z","modified":"2026-08-05T21:32:37Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:10:08.59251Z"}],"nvd":[{"id":"CVE-2026-67862","description":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.","status":"published","published":"2026-08-04T22:17:16.597Z","modified":"2026-08-31T19:33:11.197Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:12:34.643497Z"}],"osv":[{"id":"DEBIAN-CVE-2026-67862","description":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.","status":"published","published":"2026-08-04T22:17:16.597Z","modified":"2026-10-01T03:03:48.298984098Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:01.68444Z"},{"id":"UBUNTU-CVE-2026-67862","description":"open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.","status":"published","published":"2026-08-04T22:17:00Z","modified":"2026-10-17T12:56:41.674236105Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:53.710209Z"}]}}