How severe is CVE-2019-9508?

CVE-2019-9508 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-2019-9508 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9508?

CVE-2019-9508 affects Vertiv Avocent Umg-4000 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9508?

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

When was CVE-2019-9508 published?

CVE-2019-9508 was published on 2020-03-30 and last updated on 2026-06-17.

CVE-2019-9508

CVE-2019-9508 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% (46th 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 stored XSS. A remote attacker authenticated with an administrator account could store a maliciously named file within the web application that would execute each time a user browsed to the page.

Frequently asked questions

What is CVE-2019-9508?: The web interface of the Vertiv Avocent UMG-4000 version 4.2.1.19 is vulnerable to stored XSS. A remote attacker authenticated with an administrator account could store a maliciously named file within the web application that would execute each time a user browsed to the page.
How severe is CVE-2019-9508?: CVE-2019-9508 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-2019-9508 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9508?: CVE-2019-9508 affects Vertiv Avocent Umg-4000 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9508?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-9508 published?: CVE-2019-9508 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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