{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.0.0"
              },
              {
                "fixed": "4.14.6"
              },
              {
                "introduced": "5.0.0-beta1"
              },
              {
                "fixed": "5.0.0-beta2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "cddd833300cb5af494ba7dab31192bae649eb184"
            },
            {
              "fixed": "44c2925b46bd058d2426bd44ed1b3e5d7b7b03b4"
            },
            {
              "fixed": "b58b3b2552497639b1b2a2b23e8de87e4ce9cf02"
            },
            {
              "fixed": "96772487fbdecd43cc83e284ee7aeb45e3cfcd96"
            }
          ],
          "repo": "https://github.com/wazuh/wazuh",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-9wm4-fp6c-hqgq"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-131",
      "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44254.json"
  },
  "details": "Wazuh is a free and open source platform used for threat prevention, detection, and response. From 1.0.0 until 4.14.6 and 5.0.0-beta2, HandleSecureMessage() in src/remoted/secure.c passes a pointer inside its stack buffer to ReadSecMSG(), and src/os_crypto/shared/msgs.c decompresses up to OS_MAXSTR bytes at that offset. For an encrypted agent message on TCP port 1514 that expands to 65,536 bytes, os_zlib_uncompress() writes a terminating null byte beyond the end of the destination buffer. The resulting stack out-of-bounds write in the root-level remoted daemon can crash message processing and disrupt agent communications. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.",
  "id": "CVE-2026-44254",
  "modified": "2026-08-21T03:30:31.525425918Z",
  "published": "2026-08-19T16:09:55.307Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44254.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44254"
    },
    {
      "type": "FIX",
      "url": "https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96"
    },
    {
      "type": "FIX",
      "url": "https://github.com/wazuh/wazuh/pull/35773"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Wazuh: Stack Out-of-Bounds Write in remoted Decompression Path"
}