The web interface of the Vertiv Avocent UMG-4000 version 4.2.1.19 is vulnerable to reflected cross site scripting
Published Mar 30, 2020
6.3
MEDIUMCVSS 3.1
EPSS 0.92%
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.
Affected products
-
- Version 4.2.1.19StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Vertiv | Avocent UMG-4000 | n/a |
|
- 4.2.1.19
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Vertiv Avocent has released patches for these vulnerabilities. Trellis customers of the UMG running firmware v4.2.0.23 that are operating Trellis v5.0.2 through 5.0.6 and all Non-Trellis UMG customers should install the update patch found https://www.vertiv.com/en-us/support/software-download/it-management/avocent-universal-management-gateway-appliance--software-downloads/ . Trellis users of the UMG that are operating Trellis v5.0.6 and later should install Universal Gateway firmware version 4.3.0.23 found https://www.vertiv.com/en-us/support/software-download/software/trellis-enterprise-and-quick-start-solutions-software-downloads/ .
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:S/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.92% (0.00917) | 58.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.92% (0.00917) | 55.37th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.20% (0.00200) | 40.00th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00078) | 35.25th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.08% (0.00078) | 33.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00078) | 31.44th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.69% (0.01689) | 76.10th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.69% (0.01689) | 74.03th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.47% (0.09475) | 87.15th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.23% (0.06231) | 82.49th | v1 |
| Jan 6, 2022 | 6.23% (0.06231) | 82.32th | v1 |
| Jan 5, 2022 | 1.46% (0.01459) | 73.42th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.46% (0.01459) | 0.00th | v1 |
References (2)
- https://www.vertiv.com/en-us/support/software-download/it-management/avocent-universal-management-gateway-appliance--software-downloads/ x_refsource_MISCVendor Advisory
- https://www.vertiv.com/en-us/support/software-download/software/trellis-enterprise-and-quick-start-solutions-software-downloads/ x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.vertiv.com/en-us/support/software-download/it-management/avocent-universal-management-gateway-appliance--software-downloads/ | x_refsource_MISCVendor Advisory | |
| https://www.vertiv.com/en-us/support/software-download/software/trellis-enterprise-and-quick-start-solutions-software-downloads/ | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.