Medium severity · published May 22, 2019
CVE-2018-7851
CWE-119: Buffer errors vulnerability exists in Modicon M580 with firmware prior to V2.50, Modicon M340 with firmware prior to V3.01, BMxCRA312xx with firmware prior to V2.40, All…
6.5
CVSS
1.2%
EPSS
No
On KEV
Description
CWE-119: Buffer errors vulnerability exists in Modicon M580 with firmware prior to V2.50, Modicon M340 with firmware prior to V3.01, BMxCRA312xx with firmware prior to V2.40, All firmware versions of Modicon Premium and 140CRA312xxx when sending a specially crafted Modbus packet, which could cause a denial of service to the device that would force a restart to restore availability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
1F
140cra312xxx Firmware · Schneider-electric
All versions, or not specified · source: NVD
BC
Bmx/e Cra Firmware · Schneider-electric
before 2.40 · source: NVD
MF
M340 Firmware · Schneider-electric
before 3.01 · source: NVD
MF
M580 Firmware · Schneider-electric
before 2.50 · source: NVD
MP
Modicon Premium Firmware · Schneider-electric
All versions, or not specified · source: NVD