How severe is CVE-2019-9509?

CVE-2019-9509 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2019-9509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9509?

CVE-2019-9509 affects Vertiv Avocent Umg-4000 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9509?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-9509 published?

CVE-2019-9509 was published on 2020-03-30 and last updated on 2026-06-17.

CVE-2019-9509

CVE-2019-9509 is a medium-severity vulnerability in Vertiv Avocent Umg-4000 Firmware with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 3.5
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Vertiv Avocent Umg-4000 Firmware
Published: 2020-03-30
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-9509?: 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.
How severe is CVE-2019-9509?: CVE-2019-9509 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2019-9509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9509?: CVE-2019-9509 affects Vertiv Avocent Umg-4000 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-9509 published?: CVE-2019-9509 was published on 2020-03-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:vertiv:avocent_umg-4000_firmware:4.2.1.19:*:*:*:*:*:*:*

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