What is CVE-2016-6600?

CVE-2016-6600 is a critical-severity vulnerability in Zohocorp Webnms Framework, classified under Path Traversal. CVSS score: 9.8/10. Published 2017-01-23.

How severe is CVE-2016-6600?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2016-6600 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Path Traversal in Zohocorp Webnms Framework

CVE-2016-6600

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.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2017-01-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.908 (99.8th percentile), scored 2026-10-15.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.880 · newest: 0.908 · change: +0.028

Affected products

Zohocorp Webnms Framework — versions 5.2

Weakness classification (CWE)

CWE-22 — Path Traversal

Public proof-of-concept exploits

rapid7/metasploit-framework

References

seclists.org/fulldisclosure/2016/Aug/54 (mailing-list, Exploit, Mailing List)
forums.webnms.com/topic/recent-vulnerabilities-in-webnms-and-how-to-protect-the…
www.securityfocus.com/bid/92402 (VDB Entry, Third Party Advisory, vdb-entry)
www.exploit-db.com/exploits/40229/ (Exploit, Third Party Advisory, exploit)
www.securityfocus.com/archive/1/539159/100/0/threaded (mailing-list)
packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Ob… (Exploit, Third Party Advisory)
blogs.securiteam.com/index.php/archives/2712 (Technical Description, Exploit, Third Party Advisory)
github.com/pedrib/PoC/blob/master/advisories/webnms-5.2-sp1-pwn.txt (Exploit)

Frequently asked questions

What is CVE-2016-6600?: CVE-2016-6600 is a critical-severity vulnerability in Zohocorp Webnms Framework, classified under Path Traversal. CVSS score: 9.8/10. Published 2017-01-23.
How severe is CVE-2016-6600?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-6600 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.