{"id":"CVE-2016-6603","aliases":["EUVD-2016-7521","GHSA-2fmw-vp29-wcgf"],"status":"published","title":"ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and...","description":"ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.86926,"percentile":0.99748,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2017-01-23T21:00:00Z","modified":"2026-06-17T00:51:26Z","exploits":[{"source":"exploitdb","id":"EDB-40229","title":"WebNMS Framework Server 5.2/5.2 SP1 - Multiple Vulnerabilities","type":"webapps","platform":"jsp","date":"2016-08-10","url":"https://www.exploit-db.com/exploits/40229"}],"products":[{"vendor":"zohocorp","product":"webnms_framework"}],"references":[{"url":"http://seclists.org/fulldisclosure/2016/Aug/54","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Exploit","Mailing List","Third Party Advisory"]},{"url":"https://forums.webnms.com/topic/recent-vulnerabilities-in-webnms-and-how-to-protect-the-server-against-them","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securityfocus.com/bid/92402","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.exploit-db.com/exploits/40229/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/archive/1/539159/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://blogs.securiteam.com/index.php/archives/2712","tags":["x_refsource_MISC","x_transferred","Exploit","Technical Description","Third Party Advisory"]},{"url":"https://github.com/pedrib/PoC/blob/master/advisories/webnms-5.2-sp1-pwn.txt","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-6603"},{"url":"https://www.exploit-db.com/exploits/40229"},{"url":"https://github.com/advisories/GHSA-2fmw-vp29-wcgf"}],"sources":{"cve":[{"id":"CVE-2016-6603","description":"ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header.","status":"published","published":"2017-01-23T21:00:00Z","modified":"2024-08-06T01:36:28.258Z","updated_at":"2026-11-02T14:33:34.443637Z"}],"euvd":[{"id":"EUVD-2016-7521","description":"ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header.","status":"published","published":"2017-01-23T21:00:00Z","modified":"2024-08-06T01:36:28Z","updated_at":"2026-11-03T02:22:36.370031Z"}],"ghsa":[{"id":"GHSA-2fmw-vp29-wcgf","title":"ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and...","description":"ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header.","status":"published","published":"2022-05-14T02:46:12Z","modified":"2025-04-20T03:32:32Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:01:39.626411Z"}],"nvd":[{"id":"CVE-2016-6603","description":"ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header.","status":"published","published":"2017-01-23T21:59:02.313Z","modified":"2026-06-17T00:51:26.44Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:03:35.029632Z"}]}}