Rockwell Automation - Denial-of-service and Input Validation Vulnerabilities in PowerFlex® 527
Published Mar 25, 2024
7.5
HIGHCVSS 3.1
EPSS 2.82%
Description
A denial-of-service vulnerability exists in the Rockwell Automation PowerFlex® 527 due to improper input validation in the device. If exploited, the web server will crash and need a manual restart to recover it.
Affected products
-
- Version v2.001.x <StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Rockwell Automation | PowerFlex® 527 | unaffected |
|
- ≥ 2.001
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
There is no fix currently for this vulnerability. Users using the affected software are encouraged to apply risk mitigations and security best practices, where possible.
* Implement network segmentation confirming the device is on an isolated network. * Disable the web server https://literature.rockwellautomation.com/idc/groups/literature/documents/um/520-um002_-en-e.pdf , if not needed. The web server is disabled by default. Disabling this feature is available in v2.001.x and later. * Security Best Practices https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Mar 28, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2024–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (5 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.82% (0.02820) | 86.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.82% (0.02820) | 84.68th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.20% (0.00200) | 40.11th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00043) | 10.81th | v3 (v2023.03.01) |
| Mar 26, 2024 | 0.04% (0.00043) | 7.36th | v3 (v2023.03.01) |
References (1)
| Link | Providers | Tags |
|---|---|---|
| https://https://www.rockwellautomation.com/en-us/support/advisory.SD1664.html | Vendor Advisory |
Change history (0)
No recorded changes yet.