CVE-2016-6602
CriticalPublic exploitZOHO WebNMS Framework 5.2 and 5.2 SP1 use a weak obfuscation algorithm to store passwords, which allows context-dependent attackers to obtain cleartext passwords by leveraging access to WEB-INF/conf/securitydbData.xml.
Published Jan 23, 2017 · Updated May 12, 2026
Key Facts
Patch immediately- CVE-2016-6602 is a critical-severity vulnerability (CVSS 9.8 v3) affecting Webnms Framework (Zohocorp).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 56% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
56%
Higher than 99.0% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2016-6602 brief as a PDF
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Description
ZOHO WebNMS Framework 5.2 and 5.2 SP1 use a weak obfuscation algorithm to store passwords, which allows context-dependent attackers to obtain cleartext passwords by leveraging access to WEB-INF/conf/securitydbData.xml. NOTE: this issue can be combined with CVE-2016-6601 for a remote exploit.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Webnms FrameworkZohocorp | 5.2, 5.2-sp1 | n/a |
Timeline
Publicly disclosed
Jan 23, 2017
Last updated
May 12, 2026
Weakness Type
- CWE-327 Use of a Broken or Risky Cryptographic Algorithm
References
- advisoryhttp://www.rapid7.com/db/modules/auxiliary/admin/http/webnms_cred_disclosure
- advisory92402
- exploithttp://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html
- exploithttps://blogs.securiteam.com/index.php/archives/2712
- exploit20160812 [CVE-2016-6600/1/2/3]: Multiple vulnerabilities (RCE, file download, etc) in WebNMS Framework 5.2 / 5.2 SP1
FAQ
Common Questions.
ZOHO WebNMS Framework 5.2 and 5.2 SP1 use a weak obfuscation algorithm to store passwords, which allows context-dependent attackers to obtain cleartext passwords by leveraging access to WEB-INF/conf/securitydbData.xml.
Affected: Webnms Framework (Zohocorp) versions 5.2, 5.2-sp1. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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