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HIGH · 7.5

CVE-2021-22787

A CWE-20: Improper Input Validation vulnerability exists that could cause denial of service of the device when an attacker sends a specially crafted HTTP request to the web server of the device. Affec...

Vulnerability Description

A CWE-20: Improper Input Validation vulnerability exists that could cause denial of service of the device when an attacker sends a specially crafted HTTP request to the web server of the device. Affected Product: Modicon M340 CPUs: BMXP34 (Versions prior to V3.40), Modicon M340 X80 Ethernet Communication Modules: BMXNOE0100 (H), BMXNOE0110 (H), BMXNOC0401, BMXNOR0200H RTU (All Versions), Modicon Premium Processors with integrated Ethernet (Copro): TSXP574634, TSXP575634, TSXP576634 (All Versions), Modicon Quantum Processors with Integrated Ethernet (Copro): 140CPU65xxxxx (All Versions), Modicon Quantum Communication Modules: 140NOE771x1, 140NOC78x00, 140NOC77101 (All Versions), Modicon Premium Communication Modules: TSXETY4103, TSXETY5103 (All Versions)

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-ElectricModicon M340 Bmxp342020 Firmware< 3.40
Schneider-ElectricModicon M340 Bmxp342020-
Schneider-ElectricBmxnoe0100 FirmwareAll versions
Schneider-ElectricBmxnoe0100-
Schneider-ElectricBmxnoe0110 FirmwareAll versions
Schneider-ElectricBmxnoe0110-
Schneider-ElectricBmxnoc0401 FirmwareAll versions
Schneider-ElectricBmxnoc0401-
Schneider-ElectricBmxnor0200H Rtu FirmwareAll versions
Schneider-ElectricBmxnor0200H Rtu-
Schneider-ElectricTsxp574634 FirmwareAll versions
Schneider-ElectricTsxp574634-
Schneider-ElectricTsxp575634 FirmwareAll versions
Schneider-ElectricTsxp575634-
Schneider-ElectricTsxp576634 FirmwareAll versions
Schneider-ElectricTsxp576634-
Schneider-Electric140Cpu65150 FirmwareAll versions
Schneider-Electric140Cpu65150-
Schneider-Electric140Noe771X1 FirmwareAll versions
Schneider-Electric140Noe771X1-

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2021-22787?

CVE-2021-22787 is a vulnerability with a CVSS score of 7.5 (HIGH). A CWE-20: Improper Input Validation vulnerability exists that could cause denial of service of the device when an attacker sends a specially crafted HTTP request to the web server of the device. Affec...

How severe is CVE-2021-22787?

CVE-2021-22787 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-2021-22787?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Modicon M340 Bmxp342020 Firmware, Schneider-Electric Modicon M340 Bmxp342020, Schneider-Electric Bmxnoe0100 Firmware, Schneider-Electric Bmxnoe0100, Schneider-Electric Bmxnoe0110 Firmware.