High severity · published Nov 30, 2018
CVE-2018-7831
An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and…
8.8
CVSS
0.6%
EPSS
No
On KEV
Description
An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 allowing an attacker to send a specially crafted URL to a currently authenticated web server user to execute a password change on the web server.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MB
Modicom Bmxnor0200h Firmware · Schneider-electric
All versions, or not specified · source: NVD
MM
Modicom M340 Firmware · Schneider-electric
All versions, or not specified · source: NVD
MP
Modicom Premium Firmware · Schneider-electric
All versions, or not specified · source: NVD
MQ
Modicom Quantum Firmware · Schneider-electric
All versions, or not specified · source: NVD
Affected product
MB
Modicom Bmxnor0200h Firmware
Schneider-electric
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-7831
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-7831
Vendor Advisory
https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/
Exploit
https://www.tenable.com/security/research/tra-2018-38
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