CVE-2021-22786
7.5 · HIGHOverview
CVE-2021-22786 is a high-severity vulnerability affecting schneider-electric modicon_m340_bmxp341000_firmware. It was published on February 1, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)
Remediation
Check the references section for vendor advisories and patches from schneider-electric. Update modicon_m340_bmxp341000_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| schneider-electric | modicon_m340_bmxp341000_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp342000_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp342010_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp3420102_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp342020_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp342020h_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp342030_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp3420302_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp3420302h_firmware | >= 0, < 3.40 | Affected |
| schneider-electric | modicon_m340_bmxp342030h_firmware | >= 0, < 3.40 | Affected |
References
Frequently Asked Questions
What is CVE-2021-22786?
CVE-2021-22786 is a high-severity vulnerability affecting schneider-electric modicon_m340_bmxp341000_firmware. It was published on February 1, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-22786?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-22786?
Check the references section for vendor advisories and patches from schneider-electric. Update modicon_m340_bmxp341000_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-22786?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-22786 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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