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HIGH · 7.5

CVE-2021-22816

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...

Vulnerability 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

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
Schneider-ElectricScadapack 312E Firmware< 8.19.1
Schneider-ElectricScadapack 312E-
Schneider-ElectricScadapack 313E Firmware< 8.19.1
Schneider-ElectricScadapack 313E-
Schneider-ElectricScadapack 314E Firmware< 8.19.1
Schneider-ElectricScadapack 314E-
Schneider-ElectricScadapack 330E Firmware< 8.19.1
Schneider-ElectricScadapack 330E-
Schneider-ElectricScadapack 333E Firmware< 8.19.1
Schneider-ElectricScadapack 333E-
Schneider-ElectricScadapack 334E Firmware< 8.19.1
Schneider-ElectricScadapack 334E-
Schneider-ElectricScadapack 337E Firmware< 8.19.1
Schneider-ElectricScadapack 337E-
Schneider-ElectricScadapack 350E Firmware< 8.19.1
Schneider-ElectricScadapack 350E-
Schneider-ElectricScadapack 357E Firmware< 8.19.1
Schneider-ElectricScadapack 357E-

Related Weaknesses (CWE)

CWE-754

References

FAQ

What is CVE-2021-22816?

CVE-2021-22816 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...

How severe is CVE-2021-22816?

CVE-2021-22816 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-22816?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Scadapack 312E Firmware, Schneider-Electric Scadapack 312E, Schneider-Electric Scadapack 313E Firmware, Schneider-Electric Scadapack 313E, Schneider-Electric Scadapack 314E Firmware.