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Fencer Intel
critical 9.8

CVE-2016-6600 in the critical feed json

Directory traversal vulnerability in the file upload functionality in ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to uplo…

published 2017-01-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7518

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
90.8%
EPSS 90.8% chance of exploitation in 30 days, percentile 99.8%
public exploits
2
Metasploit, Exploit-DB

Summary

Directory traversal vulnerability in the file upload functionality in ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to upload and execute arbitrary JSP files via a .. (dot dot) in the fileName parameter to servlets/FileUploadServlet.

Timeline

  1. First public exploit (Metasploit exploit/multi/http/webnms_file_upload)
  2. Published

Exploit prediction

90.80% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/multi/http/webnms_file_upload WebNMS Framework Server Arbitrary File Upload metasploit exploit, excellent rank, 2016-07-04
  • EDB-40229 WebNMS Framework Server 5.2/5.2 SP1 - Multiple Vulnerabilities webapps, 2016-08-10
  • seclists.org http://seclists.org/fulldisclosure/2016/Aug/54 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html referenced PoC, tagged "exploit" by a source, unverified
  • blogs.securiteam.com https://blogs.securiteam.com/index.php/archives/2712 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/pedrib/PoC/blob/master/advisories/webnms-5.2-sp1-pwn.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.