High severity · published Dec 11, 2020
CVE-2020-7537
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see…
7.5
CVSS
1.4%
EPSS
No
On KEV
Description
A 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 for affected versions), that could cause denial of service when a specially crafted Read Physical Memory request over Modbus is sent to the controller.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MM
Modicon M340 Bmxp341000 Firmware · Schneider-electric
before 3.30 · source: NVD
MM
Modicon M340 Bmxp342000 Firmware · Schneider-electric
before 3.30 · source: NVD
MM
Modicon M340 Bmxp3420102 Firmware · Schneider-electric
before 3.30 · source: NVD
MM
Modicon M340 Bmxp3420102cl Firmware · Schneider-electric
before 3.30 · source: NVD
MM
Modicon M340 Bmxp342020 Firmware · Schneider-electric
before 3.30 · source: NVD
MM
Modicon M340 Bmxp3420302 Firmware · Schneider-electric
before 3.30 · source: NVD
MM
Modicon M340 Bmxp3420302cl Firmware · Schneider-electric
before 3.30 · source: NVD
MM
Modicon M580 Bmep581020 Firmware · Schneider-electric
before 3.20 · source: NVD
MM
Modicon M580 Bmep582020 Firmware · Schneider-electric
before 3.20 · source: NVD
MM
Modicon M580 Bmep582040 Firmware · Schneider-electric
before 3.20 · source: NVD
MM
Modicon M580 Bmep583020 Firmware · Schneider-electric
before 3.20 · source: NVD
MM
Modicon M580 Bmep583040 Firmware · Schneider-electric
before 3.20 · source: NVD
Affected product
MM
Modicon M340 Bmxp341000 Firmware
Schneider-electric
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7537
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-7537
Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-343-08/
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