What’s Vulnerable › Vulnerabilities

CVE-2021-22785

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-11 · updated 2026-06-17
• Weakness: CWE-200

Description

A CWE-200: Information Exposure vulnerability exists that could cause sensitive information of files located in the web root directory to leak when an attacker sends a 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)

Affected products

• Schneider-Electric 140Cpu65150 Firmware: all versions
• Schneider-Electric 140Noc77101 Firmware: all versions
• Schneider-Electric 140Noc78X00 Firmware: all versions
• Schneider-Electric 140Noe771X1 Firmware: all versions
• Schneider-Electric Bmxnoc0401 Firmware: all versions
• Schneider-Electric Bmxnoe0100 Firmware: all versions
• Schneider-Electric Bmxnoe0110 Firmware: all versions
• Schneider-Electric Bmxnor0200H Rtu Firmware: all versions
• Schneider-Electric Modicon M340 Bmxp342020 Firmware: before 3.40 — fixed in 3.40
• Schneider-Electric Tsxety4103 Firmware: all versions
• Schneider-Electric Tsxety5103 Firmware: all versions
• Schneider-Electric Tsxp574634 Firmware: all versions
• Schneider-Electric Tsxp575634 Firmware: all versions
• Schneider-Electric Tsxp576634 Firmware: all versions

How to fix

Upgrade to a fixed version: Schneider-Electric Modicon M340 Bmxp342020 Firmware 3.40. Check the vendor advisory for mitigations.

References

• https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-257-02
• https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-257-02

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