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CVE-2016-6603
ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName…
Critical9.8EPSS 86.9%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 86.9% · top 0.3% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
n/a
- affected n/a
References (8)
- 20160812 [CVE-2016-6600/1/2/3]: Multiple vulnerabilities (RCE, file download, etc) in WebNMS Framework 5.2 / 5.2 SP1 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- https://forums.webnms.com/topic/recent-vulnerabilities-in-webnms-and-how-to-protect-the-server-against-them (opens in a new tab)x_refsource_CONFIRMx_transferred
- 92402 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 40229 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 20160808 [CVE-2016-6600/1/2/3]: Multiple vulnerabilities (RCE, file download, etc) in WebNMS Framework 5.2 / 5.2 SP1 (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html (opens in a new tab)x_refsource_MISCx_transferred
- https://blogs.securiteam.com/index.php/archives/2712 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/pedrib/PoC/blob/master/advisories/webnms-5.2-sp1-pwn.txt (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2016-6603)Record last updated .