CVE-2026-6952

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6952", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "state": "PUBLISHED", "assignerShortName": "Zyxel", "dateReserved": "2026-04-24T08:08:46.958Z", "datePublished": "2026-07-21T02:00:01.471Z", "dateUpdated": "2026-07-23T03:56:26.499Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2026-07-21T02:00:01.471Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-78", "description": "CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection')", "type": "CWE"}]}], "affected": [{"vendor": "Zyxel", "product": "AX7501-B1 firmware", "versions": [{"status": "affected", "version": "<= 5.17(ABPC.7.2)C0"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A post-authentication command injection vulnerability in the \"LogServer\" field of the syslog component in Zyxel AX7501-B1 firmware versions through\u00a05.17(ABPC.7.2)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A post-authentication command injection vulnerability in the \"LogServer\" field of the syslog component in Zyxel AX7501-B1 firmware versions through&nbsp;5.17(ABPC.7.2)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device."}]}], "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-certain-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-07-21-2026", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.2, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.4"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-22T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-6952"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-23T03:56:26.499Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-6952", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-07-21T13:20:03.917983Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-21T13:20:18.273Z"}}], "cna": {"source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Zyxel", "product": "AX7501-B1 firmware", "versions": [{"status": "affected", "version": "<= 5.17(ABPC.7.2)C0"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-certain-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-07-21-2026", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.4"}, "descriptions": [{"lang": "en", "value": "A post-authentication command injection vulnerability in the \"LogServer\" field of the syslog component in Zyxel AX7501-B1 firmware versions through\u00a05.17(ABPC.7.2)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.", "supportingMedia": [{"type": "text/html", "value": "A post-authentication command injection vulnerability in the \"LogServer\" field of the syslog component in Zyxel AX7501-B1 firmware versions through&nbsp;5.17(ABPC.7.2)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-78", "description": "CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection')"}]}], "providerMetadata": {"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2026-07-21T02:00:01.471Z"}}}, "cveMetadata": {"cveId": "CVE-2026-6952", "state": "PUBLISHED", "dateUpdated": "2026-07-23T03:56:26.499Z", "dateReserved": "2026-04-24T08:08:46.958Z", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "datePublished": "2026-07-21T02:00:01.471Z", "assignerShortName": "Zyxel"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "AX7501-B1 firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "<= 5.17(ABPC.7.2)C0"}]}], "source": "security@zyxel.com.tw"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A post-authentication command injection vulnerability in the \"LogServer\" field of the syslog component in Zyxel AX7501-B1 firmware versions through\u00a05.17(ABPC.7.2)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device."}, {"lang": "es", "value": "Una vulnerabilidad de inyecci\u00f3n de comandos post-autenticaci\u00f3n en el campo \u2019LogServer\u2019 del componente syslog en las versiones de firmware de Zyxel AX7501-B1 hasta la 5.17(ABPC.7.2)C0 podr\u00eda permitir a un atacante autenticado con privilegios de administrador ejecutar comandos del sistema operativo en un dispositivo afectado."}], "id": "CVE-2026-6952", "lastModified": "2026-10-24T20:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "security@zyxel.com.tw", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6952", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-22T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-07-21T03:16:42.610", "references": [{"source": "security@zyxel.com.tw", "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-certain-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-07-21-2026"}], "sourceIdentifier": "security@zyxel.com.tw", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security@zyxel.com.tw", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,5.17(ABPC.7.2)C0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "AX7501-B1 firmware", "source": "cna", "vendor": "Zyxel"}, "product": "ax7501-b1_firmware", "vendor": "zyxel"}], "created": "2026-07-22T00:15:02.960434+00:00", "title": "Post\u2011Authentication Command Injection via Syslog LogServer Field in Zyxel AX7501\u2011B1 Firmware", "updated": "2026-07-30T18:15:13.047274+00:00", "vendors": ["zyxel", "zyxel$PRODUCT$ax7501-b1_firmware"]}