CVE-2026-7256

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-7256", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "state": "PUBLISHED", "assignerShortName": "Zyxel", "dateReserved": "2026-04-28T02:06:55.400Z", "datePublished": "2026-05-12T03:25:32.999Z", "dateUpdated": "2026-05-12T12:48:50.333Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2026-05-12T03:25:32.999Z"}, "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": "WRE6505 v2 firmware", "versions": [{"status": "affected", "version": "V1.00(ABDV.3)C0"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to execute operating system (OS) commands on a vulnerable device by sending a crafted HTTP request.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to execute operating system (OS) commands on a vulnerable device by sending a crafted HTTP request."}]}], "tags": ["unsupported-when-assigned"], "references": [{"url": "https://www.zyxel.com/global/en/support/end-of-life"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-12T12:48:41.435986Z", "id": "CVE-2026-7256", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-12T12:48:50.333Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-7256", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-05-12T12:48:41.435986Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-12T12:48:45.425Z"}}], "cna": {"tags": ["unsupported-when-assigned"], "source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Zyxel", "product": "WRE6505 v2 firmware", "versions": [{"status": "affected", "version": "V1.00(ABDV.3)C0"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://www.zyxel.com/global/en/support/end-of-life"}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to execute operating system (OS) commands on a vulnerable device by sending a crafted HTTP request.", "supportingMedia": [{"type": "text/html", "value": "** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to execute operating system (OS) commands on a vulnerable device by sending a crafted HTTP request.", "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": "2026-05-12T03:25:32.999Z"}}}, "cveMetadata": {"cveId": "CVE-2026-7256", "state": "PUBLISHED", "dateUpdated": "2026-05-12T12:48:50.333Z", "dateReserved": "2026-04-28T02:06:55.400Z", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "datePublished": "2026-05-12T03:25:32.999Z", "assignerShortName": "Zyxel"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "WRE6505 v2 firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "V1.00(ABDV.3)C0"}]}], "source": "security@zyxel.com.tw"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:wre6505_firmware:v1.00\\(abdv.3\\)c0:*:*:*:*:*:*:*", "matchCriteriaId": "6CCCBD5B-877B-4050-83AB-33E29C86A399", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:wre6505:v2:*:*:*:*:*:*:*", "matchCriteriaId": "80D82EE7-F4EF-46FA-9D1D-C7EC6159E74E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [{"sourceIdentifier": "security@zyxel.com.tw", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to execute operating system (OS) commands on a vulnerable device by sending a crafted HTTP request."}, {"lang": "es", "value": "Una vulnerabilidad de inyecci\u00f3n de comandos en el programa CGI del firmware Zyxel WRE6505 v2 versi\u00f3n V1.00(ABDV.3)C0 podr\u00eda permitir a un atacante adyacente en la LAN ejecutar comandos del sistema operativo (SO) en un dispositivo vulnerable mediante el env\u00edo de una solicitud HTTP manipulada."}], "id": "CVE-2026-7256", "lastModified": "2026-10-26T18:10:00.173", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "security@zyxel.com.tw", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7256", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-12T12:48:41.435986Z", "version": "2.0.3"}}]}, "published": "2026-05-12T04:16:29.360", "references": [{"source": "security@zyxel.com.tw", "tags": ["Product"], "url": "https://www.zyxel.com/global/en/support/end-of-life"}], "sourceIdentifier": "security@zyxel.com.tw", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security@zyxel.com.tw", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "V1.00(ABDV.3)C0"}}], "enrichment": {"confidence": 94.0, "confidence_source": "matching", "scores": [{"score": 94.0, "source": "matching"}]}, "original": {"product": "WRE6505 v2 firmware", "source": "cna", "vendor": "Zyxel"}, "product": "wre6505_firmware", "vendor": "zyxel"}], "created": "2026-05-12T05:30:08.392362+00:00", "updated": "2026-10-25T20:30:14.770162+00:00", "vendors": ["zyxel", "zyxel$PRODUCT$wre6505_firmware"]}