{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-67855", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-08-04T21:14:57.699Z", "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": "2026-08-04T21:14:57.699Z"}, "descriptions": [{"lang": "en", "value": "open62541 contains a heap use-after-free in the GDS PushManagement certificate update workflow when UA_ENABLE_GDS_PUSHMANAGEMENT is enabled. This allows a remote attacker to cause a denial of service."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/open62541/open62541"}, {"url": "https://github.com/open62541/open62541/issues/8093"}, {"url": "https://github.com/open62541/open62541/blob/master/src/server/ua_server_ns0_gds.c"}, {"url": "https://github.com/open62541/open62541/blob/master/arch/posix/eventloop_posix.c"}, {"url": "https://github.com/open62541/open62541/blob/master/src/server/ua_server_internal.h"}, {"url": "https://github.com/open62541/open62541/blob/master/examples/encryption/server_encryption.c"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{}

{"bugzilla": {"description": "open62541: open62541: Denial of Service via heap use-after-free", "id": "2511248", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511248"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in open62541. This heap use-after-free vulnerability, occurring in the GDS PushManagement certificate update workflow when UA_ENABLE_GDS_PUSHMANAGEMENT is enabled, allows a remote attacker to cause a denial of service (DoS). This could lead to the affected system becoming unavailable."], "name": "CVE-2026-67855", "public_date": "2026-08-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-67855\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-67855\nhttps://github.com/open62541/open62541\nhttps://github.com/open62541/open62541/blob/master/arch/posix/eventloop_posix.c\nhttps://github.com/open62541/open62541/blob/master/examples/encryption/server_encryption.c\nhttps://github.com/open62541/open62541/blob/master/src/server/ua_server_internal.h\nhttps://github.com/open62541/open62541/blob/master/src/server/ua_server_ns0_gds.c\nhttps://github.com/open62541/open62541/issues/8093"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "open62541", "vendor": "open62541"}], "created": "2026-08-04T22:30:05.155676+00:00", "updated": "2026-08-05T13:45:03.913389+00:00", "vendors": ["open62541", "open62541$PRODUCT$open62541"]}