How severe is CVE-2016-6600?

CVE-2016-6600 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-6600 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 90% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6600?

CVE-2016-6600 primarily affects Zohocorp Webnms Framework. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6600?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-6600 published?

CVE-2016-6600 was published on 2017-01-23 and last updated on 2026-06-17.

CVE-2016-6600

CVE-2016-6600 is a critical-severity vulnerability in Zohocorp Webnms Framework with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 90% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 90% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Zohocorp Webnms Framework
Published: 2017-01-23
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2016-6600?: CVE-2016-6600 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-6600 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 90% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6600?: CVE-2016-6600 primarily affects Zohocorp Webnms Framework. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6600?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-6600 published?: CVE-2016-6600 was published on 2017-01-23 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:zohocorp:webnms_framework:5.2:*:*:*:*:*:*:*
cpe:2.3:a:zohocorp:webnms_framework:5.2:sp1:*:*:*:*:*:*

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CVE-2016-6603 — Critical (CVSS 9.8): ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users…
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