Improper Check for Unusual or Exceptional Conditions
Published Mar 31, 2023
5.3
MEDIUMCVSS 3.1
EPSS 0.56%
Description
Improper Input Validation vulnerability in ABB AC500 V2 PM5xx allows Client-Server Protocol Manipulation.This issue affects AC500 V2: from 2.0.0 before 2.8.6.
Affected products
-
- Version 2.0.0StatusaffectedConstraints<2.8.6
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ABB | n/a | n/a |
|
- ≥ 2.0.0 · < 2.8.6
Running on/with
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Use the communication protocol "Tcp/Ip" instead of "ABB Tcp/Ip Level 2" (i.e. Port 1201 instead of 1200) for the connection between engineering software and PLC.
This protocol/port is not affected by the DoS impact of the vulnerability.
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:L
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
YesTechnical Impact
PartialDecision
n/aAssessed Feb 11, 2025 · 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
2023–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.56% (0.00557) | 44.40th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.56% (0.00557) | 41.80th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00059) | 15.63th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00079) | 36.12th | v3 (v2023.03.01) |
| Apr 6, 2024 | 0.07% (0.00069) | 28.88th | v3 (v2023.03.01) |
| Feb 29, 2024 | 0.06% (0.00055) | 20.26th | v3 (v2023.03.01) |
| Apr 11, 2023 | 0.05% (0.00046) | 13.99th | v3 (v2023.03.01) |
| Apr 1, 2023 | 0.04% (0.00043) | 7.01th | v3 (v2023.03.01) |
References (1)
Change history (0)
No recorded changes yet.