CVE-2021-22816
7.5 · HIGHOverview
CVE-2021-22816 is a high-severity vulnerability affecting schneider-electric scadapack_312e_firmware. It was published on January 28, 2022 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-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists that could cause a Denial of Service of the RTU when receiving a specially crafted request over Modbus, and the RTU is configured as a Modbus server. Affected Products: SCADAPack 312E, 313E, 314E, 330E, 333E, 334E, 337E, 350E and 357E RTUs with firmware V8.18.1 and prior
Remediation
Check the references section for vendor advisories and patches from schneider-electric. Update scadapack_312e_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 | scadapack_312e_firmware | >= 0, < 8.19.1 | Affected |
| schneider-electric | scadapack_313e_firmware | >= 0, < 8.19.1 | Affected |
| schneider-electric | scadapack_314e_firmware | >= 0, < 8.19.1 | Affected |
| schneider-electric | scadapack_330e_firmware | >= 0, < 8.19.1 | Affected |
| schneider-electric | scadapack_333e_firmware | >= 0, < 8.19.1 | Affected |
| schneider-electric | scadapack_334e_firmware | >= 0, < 8.19.1 | Affected |
| schneider-electric | scadapack_337e_firmware | >= 0, < 8.19.1 | Affected |
| schneider-electric | scadapack_350e_firmware | >= 0, < 8.19.1 | Affected |
| schneider-electric | scadapack_357e_firmware | >= 0, < 8.19.1 | Affected |
Frequently Asked Questions
What is CVE-2021-22816?
CVE-2021-22816 is a high-severity vulnerability affecting schneider-electric scadapack_312e_firmware. It was published on January 28, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-22816?
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-2021-22816?
Check the references section for vendor advisories and patches from schneider-electric. Update scadapack_312e_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-2021-22816?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-22816 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.
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