Is CVE-2016-6603 actively exploited?

CVE-2016-6603 has no public evidence of in-the-wild exploitation as of 2025-04-20.

What is the CVSS score for CVE-2016-6603?

CVE-2016-6603 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Patch guidance is available from zohocorp security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2016-6603.

2 products: zohocorp webnms framework, zohocorp webnms framework.

ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header.

Primary Vendor: ZOHOCORP
Published: 1/23/2017
Last Modified: 4/20/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.