CVE-2021-22785

What it is

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)

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

1.0% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-02-11 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:37 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.0% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-02-11 18:15 UTC

Last modified

2026-06-17 03:37 UTC

Exploit probability

1.0% · EPSS, next 30 days

Weakness

CWE-200 · Information exposure

Record status

Modified

Affected

• schneider-electric Modicon m340 bmxp342020 Firmware < 3.40
• schneider-electric bmxnoe0100 Firmware
• schneider-electric bmxnoe0110 Firmware
• schneider-electric bmxnoc0401 Firmware
• schneider-electric bmxnor0200h Rtu Firmware
• schneider-electric tsxp574634 Firmware
• schneider-electric tsxp575634 Firmware
• schneider-electric tsxp576634 Firmware

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-22785.md and follow it. Check whether this project is affected by CVE-2021-22785. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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