{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-44254", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-05T16:33:55.844Z", "datePublished": "2026-08-19T16:09:55.307Z", "dateUpdated": "2026-08-19T16:09:55.307Z"}, "containers": {"cna": {"title": "Wazuh: Stack Out-of-Bounds Write in remoted Decompression Path", "problemTypes": [{"descriptions": [{"cweId": "CWE-131", "lang": "en", "description": "CWE-131: Incorrect Calculation of Buffer Size", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-787", "lang": "en", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "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"}}], "references": [{"name": "https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgq"}, {"name": "https://github.com/wazuh/wazuh/pull/35773", "tags": ["x_refsource_MISC"], "url": "https://github.com/wazuh/wazuh/pull/35773"}, {"name": "https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96", "tags": ["x_refsource_MISC"], "url": "https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96"}, {"name": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6"}, {"name": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2", "tags": ["x_refsource_MISC"], "url": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2"}], "affected": [{"vendor": "wazuh", "product": "wazuh", "versions": [{"version": ">= 1.0.0, < 4.14.6", "status": "affected"}, {"version": ">= 5.0.0-beta1, < 5.0.0-beta2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-19T16:09:55.307Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-9wm4-fp6c-hqgq", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "wazuh", "vendor": "wazuh", "versions": [{"status": "affected", "version": ">= 1.0.0, < 4.14.6"}, {"status": "affected", "version": ">= 5.0.0-beta1, < 5.0.0-beta2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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", "lastModified": "2026-08-19T16:17:10.967", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-19T16:17:10.967", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96"}, {"source": "security-advisories@github.com", "url": "https://github.com/wazuh/wazuh/pull/35773"}, {"source": "security-advisories@github.com", "url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2"}, {"source": "security-advisories@github.com", "url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-131"}, {"lang": "en", "value": "CWE-787"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}