CVE-2019-9509

Name: CVE-2019-9509
Creator: NVD / NIST
Published: 2020-03-30T22:15:14.367+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2019-9509 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The web interface of the Vertiv Avocent UMG-4000 version 4.2.1.19 is vulnerable to reflected XSS in an HTTP POST parameter. The web application does not neutralize user-controllable input before displaying to users in a web page, which could allow a remote attacker authenticated with a user account to execute arbitrary code.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

The web interface of the Vertiv Avocent UMG-4000 version 4.2.1.19 is vulnerable to reflected XSS in an HTTP POST parameter. The web application does not neutralize user-controllable input before displaying to users in a web page, which could allow a remote attacker authenticated with a user account to execute arbitrary code.

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

0.92%

55.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vertiv	Avocent Umg-4000 Firmware	4.2.1.19

References

Timeline

Published: Mar 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9509?

How severe is CVE-2019-9509?

CVE-2019-9509 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9509?

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-2019-9509?

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

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Source: NVD / NIST