Medium severity · published Oct 29, 2019
CVE-2019-6844
A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon BMxCRA and 140CRA modules (all firmware versions), which could…
4.9
CVSS
1%
EPSS
No
On KEV
Description
A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon BMxCRA and 140CRA modules (all firmware versions), which could cause a Denial of Service atack on the PLC when upgrading the controller with a firmware package containing an invalid web server image using FTP protocol.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
M1
Modicon 140cra Firmware · Schneider-electric
All versions, or not specified · source: NVD
MB
Modicon Bmxcra Firmware · Schneider-electric
All versions, or not specified · source: NVD
MM
Modicon M340 Firmware · Schneider-electric
All versions, or not specified · source: NVD
MM
Modicon M580 Firmware · Schneider-electric
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-6844
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-6844
Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2019-281-02/
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