Raw JSON
{
"containers": {
"cna": {
"affected": [
{
"product": "unknown",
"vendor": "unknown",
"versions": [
{
"status": "affected",
"version": "unknown"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "m.nageh"
}
],
"descriptions": [
{
"lang": "en",
"value": "-----BEGIN SECURITY ADVISORY-----\n\nAdvisory ID: MONX-2021-001\nCVE ID: CVE-2021-21735\nTitle: ZTE ZXHN H168N V3.5 - Unauthenticated Wizard Credential\nDisclosure to Full Admin Compromise\nAffected: ZTE ZXHN H168N V3.5\nDate: 2026-05-20\nAuthor: Mina Nageh Salalma (Monx Research)\nContact: minanageh379 () gmail com\nPublic URL:\nhttps://github.com/minanagehsalalma/cve-2021-21735-zte-zxhn-h168n-admin-compromise\nMITRE: https://www.cve.org/CVERecord?id=CVE-2021-21735\n\n\nVULNERABILITY DESCRIPTION\n--------------------------\nThe ZTE ZXHN H168N V3.5 firmware exposes quick-setup wizard endpoints that\nreturn PPPoE credentials (ADUsername, VDUsername) and the WLAN KeyPassphrase\nvia the GetPassword action without requiring authentication. The firmware\nrouting allowlists these endpoints through a QuickSetupEnable branch.\n\nIn ISP-deployed configurations where the Wi-Fi password is reused as the\ndefault admin password, this credential disclosure is a full admin\ncompromise\nchain requiring a single unauthenticated HTTP request.\n\nA bulk PoC script (zte_zxhn_h168n_bulk_poc.py) is included in the repository\nfor verifying scale of exposure.\n\nCREDITS\n-------\nMina Nageh Salalma (Monx Research)\nhttps://github.com/minanagehsalalma\n\n-----END SECURITY ADVISORY-----\n_______________________________________________\nSent through the Full Disclosure mailing list\nhttps://nmap.org/mailman/listinfo/fulldisclosure\nWeb Archives & RSS: https://seclists.org/fulldisclosure/"
}
],
"providerMetadata": {
"dateUpdated": "2026-09-11T07:55:58Z",
"orgId": "4e2abfbf-4a2a-4b76-a4e0-d77c18ba156c",
"shortName": "VULNARCHIVE"
},
"references": [
{
"tags": [
"technical-description",
"exploit"
],
"url": "https://vuln.freearchive.org/archive/full-disclosure/2026/May/21"
},
{
"tags": [
"technical-description"
],
"url": "https://seclists.org/fulldisclosure/2026/May/21"
},
{
"url": "https://github.com/minanagehsalalma"
},
{
"url": "https://github.com/minanagehsalalma/cve-2021-21735-zte-zxhn-h168n-admin-compromise"
},
{
"url": "https://nmap.org/mailman/listinfo/fulldisclosure"
},
{
"url": "https://seclists.org/fulldisclosure/"
},
{
"url": "https://www.cve.org/CVERecord?id=CVE-2021-21735"
}
],
"source": {
"defect": [
"https://seclists.org/fulldisclosure/2026/May/21"
],
"discovery": "EXTERNAL"
},
"title": "[SECURITY ADVISORY] CVE-2021-21735 - ZTE ZXHN H168N V3.5 Unauthenticated Admin Credential Leak",
"x_gcve": [
{
"recordType": "analysis",
"relationships": [
{
"destId": "CVE-2021-21735",
"type": "related"
}
],
"vulnId": "GCVE-1988-2026-0373",
"x_vulnarchive": {
"archiveUrl": "https://vuln.freearchive.org/archive/full-disclosure/2026/May/21",
"automated": true,
"contentSha256": "d2f8f5a013e08bcb4b6b6a60a012c74c16d028380aa5efa7266932a9a7661620",
"evidenceScore": 7,
"messageId": "",
"originalUrl": "https://seclists.org/fulldisclosure/2026/May/21",
"policy": "vulnarchive-1",
"sourceFormat": "text/html",
"sourcePublishedAt": "2026-05-20T14:33:37Z"
}
}
]
}
},
"cveMetadata": {
"assignerOrgId": "4e2abfbf-4a2a-4b76-a4e0-d77c18ba156c",
"assignerShortName": "VULNARCHIVE",
"datePublished": "2026-09-11T07:55:58Z",
"dateUpdated": "2026-09-11T07:55:58Z",
"state": "PUBLISHED",
"vulnId": "GCVE-1988-2026-0373"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}