An exploitable heap buffer overflow vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC200 Firmware versions 03.01.07(13) and 03.00.39(12), and WAGO PFC100 Firmware version 03.00.39(12)
Published Dec 18, 2019
9.8
CRITICALCVSS 3.1
EPSS 3.32%
Description
An exploitable heap buffer overflow vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC200 Firmware versions 03.01.07(13) and 03.00.39(12), and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a heap buffer overflow, potentially resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.
Affected products
- Vendor n/a Product Wago Pfc100 Defaultn/a
- Version Firmware version 03.00.39(12)StatusaffectedConstraints-
- Version
- Vendor n/a Product Wago Pfc200 Defaultn/a
- Version Firmware version 03.00.39(12)StatusaffectedConstraints-
- Version Firmware version 03.01.07(13)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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n/a | Wago Pfc100 | n/a |
| |||||||||
| n/a | Wago Pfc200 | n/a |
|
Configuration 1
- 03.00.39\(12\)
- 03.01.07\(13\)
Configuration 2
- 03.00.39\(12\)
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:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 1, 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 (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.32% (0.03316) | 88.17th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.32% (0.03316) | 86.95th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.08% (0.01081) | 77.20th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.71% (0.02711) | 84.62th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.08% (0.01081) | 75.86th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.53% (0.02532) | 75.69th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.60% (0.00601) | 78.69th | v3 (v2023.03.01) |
| Mar 28, 2024 | 0.60% (0.00601) | 78.04th | v3 (v2023.03.01) |
| Mar 14, 2024 | 0.67% (0.00674) | 79.36th | v3 (v2023.03.01) |
| Jan 27, 2024 | 1.20% (0.01204) | 83.75th | v3 (v2023.03.01) |
| Nov 24, 2023 | 1.02% (0.01021) | 82.10th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.81% (0.00808) | 79.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.46% (0.00464) | 71.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.09% (0.01086) | 53.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.09% (0.01086) | 49.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.36% (0.15362) | 92.49th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.20% (0.03197) | 66.46th | v5 (v2026.06.15) |
| Jan 6, 2022 | 3.20% (0.03197) | 66.14th | v1 |
| Sep 1, 2021 | 0.73% (0.00731) | 49.19th | v1 |
| Apr 14, 2021 | 0.73% (0.00731) | 0.00th | v1 |
References (1)
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0871 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://talosintelligence.com/vulnerability_reports/TALOS-2019-0871 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.