HOME VULNERABILITIESCVE-2016-6602

CRITICALPOC

CVE-2016-6602

CWE-327Published: January 23, 2017· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

Technical Analysis

CVE-2016-6602 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

A proof-of-concept (PoC) exploit exists for CVE-2016-6602. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

zohocorp1 product(s)

webnms framework

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html

ADVISORYhttp://www.rapid7.com/db/modules/auxiliary/admin/http/webnms_cred_disclosure

ADVISORYhttp://www.securityfocus.com/bid/92402

ADVISORYhttps://blogs.securiteam.com/index.php/archives/2712

ADVISORYhttps://www.exploit-db.com/exploits/40229/

ADVISORYhttp://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html

ADVISORYhttp://www.rapid7.com/db/modules/auxiliary/admin/http/webnms_cred_disclosure

ADVISORYhttp://www.securityfocus.com/bid/92402

ADVISORYhttps://blogs.securiteam.com/index.php/archives/2712

ADVISORYhttps://www.exploit-db.com/exploits/40229/

All References (18)

→

http://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.htmlExploit · Third Party Advisory

→

http://seclists.org/fulldisclosure/2016/Aug/54Exploit · Mailing List

→

http://www.rapid7.com/db/modules/auxiliary/admin/http/webnms_cred_disclosureThird Party Advisory

→

http://www.securityfocus.com/archive/1/539159/100/0/threaded

→

http://www.securityfocus.com/bid/92402Third Party Advisory · VDB Entry

→

https://blogs.securiteam.com/index.php/archives/2712Exploit · Technical Description · Third Party Advisory

→

https://forums.webnms.com/topic/recent-vulnerabilities-in-webnms-and-how-to-protect-the-server-against-them

→

https://github.com/pedrib/PoC/blob/master/advisories/webnms-5.2-sp1-pwn.txtExploit

→

https://www.exploit-db.com/exploits/40229/Exploit · Third Party Advisory

→

http://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.htmlExploit · Third Party Advisory

→

http://seclists.org/fulldisclosure/2016/Aug/54Exploit · Mailing List

→

http://www.rapid7.com/db/modules/auxiliary/admin/http/webnms_cred_disclosureThird Party Advisory

→

http://www.securityfocus.com/archive/1/539159/100/0/threaded

→

http://www.securityfocus.com/bid/92402Third Party Advisory · VDB Entry

→

https://blogs.securiteam.com/index.php/archives/2712Exploit · Technical Description · Third Party Advisory

Quick Facts

CVE IDCVE-2016-6602

CVSS Score9.8 / 10

SeverityCRITICAL

WeaknessCWE-327

CISA KEVNo

ExploitPOC

Affected1 vendor(s)

PublishedJan 23, 2017

Related CVEs (CWE-327)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2016-6602 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

← All Vulnerabilities·Search for CVE-2016-6602·NVD