An Improper Check for Unusual or Exceptional Conditions vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0)
Published Aug 29, 2018
7.5
HIGHCVSS 3.1
EPSS 2.80%
Description
An Improper Check for Unusual or Exceptional Conditions vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows unauthorized users to remotely reboot Modicon M221 using crafted programing protocol frames.
Affected products
- Vendor Schneider Electric SE Product Modicon M221, all references, all versions prior to firmware V1.6.2.0 Defaultn/a
- Version Modicon M221, all references, all versions prior to firmware V1.6.2.0StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Schneider Electric SE | Modicon M221, all references, all versions prior to firmware V1.6.2.0 | n/a |
|
- < 1.6.2.0
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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
1 other source (CISA ADP) ▾
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
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 May 29, 2026 · 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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.80% (0.02797) | 85.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.80% (0.02797) | 84.54th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.31% (0.00306) | 70.12th | v3 (v2023.03.01) |
| Jun 5, 2024 | 0.31% (0.00306) | 68.99th | v3 (v2023.03.01) |
| Apr 9, 2024 | 0.37% (0.00372) | 72.30th | v3 (v2023.03.01) |
| Feb 21, 2024 | 0.40% (0.00397) | 72.88th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.38% (0.00376) | 72.02th | v3 (v2023.03.01) |
| Jan 20, 2024 | 0.38% (0.00376) | 69.97th | v3 (v2023.03.01) |
| Sep 27, 2023 | 0.50% (0.00498) | 73.47th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.51% (0.00506) | 73.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.45% (0.00452) | 71.21th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Oct 11, 2021 | 0.83% (0.00833) | 57.94th | v1 |
| Oct 10, 2021 | 3.63% (0.03630) | 82.53th | v5 (v2026.06.15) |
| Oct 6, 2021 | 3.63% (0.03630) | 82.47th | v1 |
| Sep 1, 2021 | 0.83% (0.00833) | 57.50th | v1 |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (3)
- http://www.securityfocus.com/bid/105171 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-240-02 x_refsource_MISCMitigationThird Party AdvisoryUS Government Resource
- https://www.schneider-electric.com/en/download/document/SEVD-2018-233-01/ x_refsource_CONFIRMMitigationVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105171 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-240-02 | x_refsource_MISCMitigationThird Party AdvisoryUS Government Resource | |
| https://www.schneider-electric.com/en/download/document/SEVD-2018-233-01/ | x_refsource_CONFIRMMitigationVendor Advisory |
Change history (0)
No recorded changes yet.