{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-12489", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "state": "PUBLISHED", "assignerShortName": "Zyxel", "dateReserved": "2026-06-17T03:45:11.296Z", "datePublished": "2026-10-20T02:04:49.838Z", "dateUpdated": "2026-10-20T02:04:49.838Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2026-10-20T02:04:49.838Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-863", "description": "CWE-863 Incorrect Authorization", "type": "CWE"}]}], "affected": [{"vendor": "Zyxel", "product": "EX3501-T0 firmware", "versions": [{"status": "affected", "version": "<= 5.44(ACHR.6)C0"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "An incorrect authorization vulnerability in the Data Access Layer (DAL) of Zyxel EX3501-T0 firmware versions through 5.44(ACHR.6)C0 could allow an authenticated attacker to escalate privileges by modifying the login_privilege data on an affected device.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "An incorrect authorization vulnerability in the Data Access Layer (DAL) of Zyxel EX3501-T0 firmware versions through 5.44(ACHR.6)C0 could allow an authenticated attacker to escalate privileges by modifying the login_privilege data on an affected device."}]}], "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-incorrect-authorization-vulnerability-in-the-dal-of-certain-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-10-20-2026", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "EX3501-T0 firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "<= 5.44(ACHR.6)C0"}]}], "source": "security@zyxel.com.tw"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An incorrect authorization vulnerability in the Data Access Layer (DAL) of Zyxel EX3501-T0 firmware versions through 5.44(ACHR.6)C0 could allow an authenticated attacker to escalate privileges by modifying the login_privilege data on an affected device."}], "id": "CVE-2026-12489", "lastModified": "2026-10-20T03:17:15.077", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security@zyxel.com.tw", "type": "Primary"}]}, "published": "2026-10-20T03:17:15.077", "references": [{"source": "security@zyxel.com.tw", "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-incorrect-authorization-vulnerability-in-the-dal-of-certain-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-10-20-2026"}], "sourceIdentifier": "security@zyxel.com.tw", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security@zyxel.com.tw", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,5.44(ACHR.6)C0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "EX3501-T0 firmware", "source": "cna", "vendor": "Zyxel"}, "product": "ex3501-t0_firmware", "vendor": "zyxel"}], "created": "2026-10-20T05:45:06.509105+00:00", "title": "Incorrect Authorization in Zyxel EX3501\u2011T0 Firmware Enables Privilege Escalation", "updated": "2026-10-20T07:15:11.302921+00:00", "vendors": ["zyxel", "zyxel$PRODUCT$ex3501-t0_firmware"]}