CVE-2021-35204

Name: CVE-2021-35204
Creator: NVD / NIST
Published: 2021-09-30T18:15:07.857+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2021-35204 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. NETSCOUT Systems nGeniusONE 6.3.0 build 1196 allows Reflected Cross-Site Scripting (XSS) in the support endpoint.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

NETSCOUT Systems nGeniusONE 6.3.0 build 1196 allows Reflected Cross-Site Scripting (XSS) in the support endpoint.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.45%

35.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Netscout	Ngeniusone	6.3.0

References

https://www.netscout.com/securityadvisoriesVendor Advisory
https://www.netscout.com/securityadvisoriesVendor Advisory

Timeline

Published: Sep 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-35204?

NETSCOUT Systems nGeniusONE 6.3.0 build 1196 allows Reflected Cross-Site Scripting (XSS) in the support endpoint.

How severe is CVE-2021-35204?

CVE-2021-35204 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2021-35204?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-35204?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST