{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-67856", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-08-04T21:17:32.989Z", "dateReserved": "2026-07-30T00:00:00.000Z", "datePublished": "2026-08-04T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-08-04T21:17:32.989Z"}, "descriptions": [{"lang": "en", "value": "An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via crafted CreateSubscription, CreateMonitoredItems(Sampling), Publish, TransferSubscriptions, and DeleteSubscriptions requests"}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/open62541/open62541/issues/8092"}, {"url": "https://github.com/open62541/open62541/blob/master/src/server/ua_services_subscription.c"}, {"url": "https://github.com/open62541/open62541/blob/master/src/server/ua_subscription.c"}, {"url": "https://github.com/open62541/open62541/blob/master/src/server/ua_subscription.h"}, {"url": "https://github.com/open62541/open62541/blob/master/examples/access_control/server_access_control.c"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.5.5]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "open62541", "vendor": "open62541"}], "created": "2026-08-04T23:00:14.996769+00:00", "title": "Denial of Service via Crafted OPC UA Subscription Requests in open62541", "updated": "2026-08-04T23:30:15.764418+00:00", "vendors": ["open62541", "open62541$PRODUCT$open62541"], "weaknesses": ["CWE-400"]}