Information disclosure in Schneider Electric Legacy Modicon Quantum
CVE-2021-22786
A 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. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)
Vulnerability class: Information Disclosure
EPSS: 0.006 (46.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Schneider Electric Legacy Modicon Quantum — versions All Versions
- Schneider Electric Modicon M340 Cpu (Part Numbers Bmxp34*) — versions All
- Schneider Electric Modicon M580 Cpu (Part Numbers Bmep* And Bmeh*) — versions All
- Schneider Electric Modicon M580 Cpu Safety (Part Numbers Bmep58*s And Bmeh58*s) — versions All Versions
- Schneider Electric Modicon Mc80 (Bmkc80) — versions All
- Schneider Electric Modicon Momentum Cpu (171cbu*) — versions All
- Schneider-electric Modicon_m340_bmxp341000
- Schneider-electric Modicon_m340_bmxp341000_firmware
- Schneider-electric Modicon_m340_bmxp342000
- Schneider-electric Modicon_m340_bmxp342000_firmware
Weakness classification (CWE)
References
- cybersecurity@se.com (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-22786?
- CVE-2021-22786 is a high-severity vulnerability in Schneider Electric Legacy Modicon Quantum, classified under Information Disclosure. CVSS score: 7.5/10. Published 2023-02-01.
- How severe is CVE-2021-22786?
- High severity. CVSS v3 base score is 7.5 out of 10.