Wago 750 Series PLCs with firmware version 10 and prior include a remote attack may take advantage of an improper implementation of the 3 way handshake during a TCP connection affecting the communications with commission and service tools
Published Apr 3, 2018
5.3
MEDIUMCVSS 3.0
EPSS 3.71%
Description
Wago 750 Series PLCs with firmware version 10 and prior include a remote attack may take advantage of an improper implementation of the 3 way handshake during a TCP connection affecting the communications with commission and service tools. Specially crafted packets may also be sent to Port 2455/TCP/IP, used in Codesys management software, which may result in a denial-of-service condition of communications with commissioning and service tools.
Affected products
-
- Version 750-829 firmware version 10 and priorStatusaffectedConstraints-
- Version 750-831 firmware version 10 and priorStatusaffectedConstraints-
- Version 750-852 firmware version 10 and priorStatusaffectedConstraints-
- Version 750-880 firmware version 10 and priorStatusaffectedConstraints-
- Version 750-881 firmware version 10 and priorStatusaffectedConstraints-
- Version 750-882 firmware version 10 and priorStatusaffectedConstraints-
- Version 750-885 firmware version 10 and priorStatusaffectedConstraints-
- Version 750-889 firmware version 10 and priorStatusaffectedConstraints-
- 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 | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WAGO | WAGO 750 Series | n/a |
|
Configuration 1
- ≤ 10
Configuration 2
- ≤ 10
Configuration 3
- ≤ 10
Configuration 4
- ≤ 10
Configuration 5
- ≤ 10
Configuration 6
- ≤ 10
Configuration 7
- ≤ 10
Configuration 8
- ≤ 10
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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:N/I:N/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 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 3.71% (0.03712) | 89.43th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.63% (0.03626) | 88.01th | v5 (v2026.06.15) |
| Mar 30, 2026 | 2.04% (0.02035) | 83.73th | v4 (v2025.03.14) |
| Nov 21, 2025 | 3.32% (0.03324) | 86.79th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.04% (0.02035) | 82.37th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.32% (0.03324) | 86.43th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.29% (0.00291) | 69.38th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.29% (0.00291) | 68.19th | v3 (v2023.03.01) |
| Nov 21, 2023 | 0.29% (0.00291) | 65.67th | v3 (v2023.03.01) |
| Oct 4, 2023 | 0.22% (0.00219) | 59.43th | v3 (v2023.03.01) |
| Aug 25, 2023 | 0.21% (0.00207) | 57.98th | v3 (v2023.03.01) |
| Mar 28, 2023 | 0.28% (0.00279) | 63.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00243) | 60.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v1 |
| Jan 6, 2022 | 0.83% (0.00833) | 23.96th | 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/103726 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01 x_refsource_MISCThird Party AdvisoryUS Government Resource
- https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdf?context=bWFzdGVyfHJvb3R8MjgxNDk0fGFwcGxpY2F0aW9uL3BkZnxoOTcvaDhkLzkxNTAyMjMyMjA3NjYucGRmfGRlNWQ4ODc0NTE5M2UyNTUwNTIyNDRlOWFkNWI2YjNkMzg0YTVhYzlmYTBjNzM4MDdmNmYzOTM5M2ZlMGEzNzE x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/103726 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01 | x_refsource_MISCThird Party AdvisoryUS Government Resource | |
| https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdf?context=bWFzdGVyfHJvb3R8MjgxNDk0fGFwcGxpY2F0aW9uL3BkZnxoOTcvaDhkLzkxNTAyMjMyMjA3NjYucGRmfGRlNWQ4ODc0NTE5M2UyNTUwNTIyNDRlOWFkNWI2YjNkMzg0YTVhYzlmYTBjNzM4MDdmNmYzOTM5M2ZlMGEzNzE | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.