{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "wazuh",
          "vendor": "wazuh",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.9.0, \u003c 4.14.7"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. DecodeWinevt in src/analysisd/decoders/winevtchannel.c accumulates unnamed Windows EventChannel Data element contents into the fixed 65,535-byte join_data heap buffer but passes the growing content length, rather than the OS_MAXSTR buffer capacity, as the snprintf size. An enrolled agent can submit an EventChannel message containing four maximum-sized unnamed Data elements, causing the fourth accumulation to write beyond join_data and corrupt adjacent heap metadata. The subsequent free of join_data2 causes the wazuh-analysisd process to terminate, stopping log ingestion for all agents handled by that manager. This vulnerability is fixed in 4.14.7."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122: Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-04T22:46:40.298Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/wazuh/wazuh/security/advisories/GHSA-whhr-gxxr-f6pm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-whhr-gxxr-f6pm"
        },
        {
          "name": "https://github.com/wazuh/wazuh/pull/37198",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wazuh/wazuh/pull/37198"
        },
        {
          "name": "https://github.com/wazuh/wazuh/commit/07c5b2829f671eac0436412701a346a26555fdc7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wazuh/wazuh/commit/07c5b2829f671eac0436412701a346a26555fdc7"
        },
        {
          "name": "https://github.com/wazuh/wazuh/releases/tag/v4.14.7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.7"
        }
      ],
      "source": {
        "advisory": "GHSA-whhr-gxxr-f6pm",
        "discovery": "UNKNOWN"
      },
      "title": "Wazuh: Heap Buffer Overflow in DecodeWinevt() join_data Accumulation via Crafted EventChannel XML"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-62365",
    "datePublished": "2026-11-04T22:46:40.298Z",
    "dateReserved": "2026-07-13T22:04:59.677Z",
    "dateUpdated": "2026-11-04T22:46:40.298Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}