CVE Tools

Modicon M340

59 CVEs tracked. None of them is in CISA KEV.

This hub aggregates every CVE we track for Modicon M340, a product in the ics ot iot space. Use it to gauge the current risk picture and drill into individual advisories.

Modicon M340 CVEs per month

Oct 2024 to Sep 2026. Point at a month, or focus the strip and use the arrow keys.
Modicon M340 CVEs per month
MonthCVEs
2024-100
2024-110
2024-120
2025-011
2025-020
2025-030
2025-040
2025-050
2025-060
2025-070
2025-081
2025-090
2025-100
2025-110
2025-120
2026-010
2026-020
2026-030
2026-040
2026-050
2026-060
2026-070
2026-080
2026-090

Severity

How the 59 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.

  • Critical1220%
  • High3153%
  • Medium1627%

Latest CVEs

The 15 most recently published vulnerabilities affecting Modicon M340.

  1. CVE-2025-6625CWE-20: Improper Input Validation vulnerability exists that could cause a Denial Of Service when specific crafted FTP command is sent to the device.7.5
  2. CVE-2024-12142CWE-200: Exposure of Sensitive Information to an Unauthorized Actor vulnerability exists that could cause information disclosure of restricted web page, modification of web page and denial of servi...8.6
  3. CVE-2024-5056CWE-552: Files or Directories Accessible to External Parties vulnerability exists which may prevent user to update the device firmware and prevent proper behavior of the webserver when specific fil...6.5
  4. CVE-2021-22786A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. A...7.5
  5. CVE-2022-45789A CWE-294: Authentication Bypass by Capture-replay vulnerability exists that could cause execution of unauthorized Modbus functions on the controller when hijacking an authenticated Modbus session....8.1
  6. CVE-2022-37301A CWE-191: Integer Underflow (Wrap or Wraparound) vulnerability exists that could cause a denial of service of the controller due to memory access violations when using the Modbus TCP protocol. Aff...7.5
  7. CVE-2022-37300A CWE-640: Weak Password Recovery Mechanism for Forgotten Password vulnerability exists that could cause unauthorized access in read and write mode to the controller when communicating over Modbus....9.8
  8. CVE-2021-22787A 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. Af...7.5
  9. CVE-2021-22779Authentication Bypass by Spoofing vulnerability exists in EcoStruxure Control Expert (all versions prior to V15.0 SP1, including all versions of Unity Pro), EcoStruxure Control Expert V15.0 SP1, Ec...9.1
  10. CVE-2020-7541A CWE-425: Direct Request ('Forced Browsing') vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see sec...5.3
  11. CVE-2020-7540A CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Module...9.8
  12. CVE-2020-7539A CWE-754 Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication...7.5
  13. CVE-2020-7537A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications ...7.5
  14. CVE-2020-7562A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details...8.1
  15. CVE-2020-7563A CWE-787: Out-of-bounds Write vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for detail...8.8

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