High severity · published Dec 11, 2020
CVE-2020-7542
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
1.3%
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)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
1F
140cpu65150 Firmware · Schneider-electric
All versions, or not specified · source: NVD
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
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7542
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-7542
Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-343-08/
More from 140cpu65150 Firmware
9.8
CVE-2020-7540
A 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…
9.8
CVE-2018-7761
A vulnerability exists in the HTTP request parser in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200 which could allow arbitrary code execution
9.8
CVE-2018-7760
An authorization bypass vulnerability exists in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200
9.8
CVE-2018-7242
Vulnerable hash algorithms exists in Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers in all versions of the communication modules
9.8
CVE-2018-7241
Hard coded accounts exist in Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers in all versions of the communication modules