CVE-2018-7811 — CRITICAL (9.8)

Vulnerability Description

An Unverified Password Change vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 which could allow an unauthenticated remote user to access the change password function of the web server

CVSS Score

9.8

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Schneider-Electric	Modicom M340 Firmware	All versions
Schneider-Electric	Modicom M340	-
Schneider-Electric	Modicom Premium Firmware	All versions
Schneider-Electric	Modicom Premium	All versions
Schneider-Electric	Modicom Quantum Firmware	All versions
Schneider-Electric	Modicom Quantum	All versions
Schneider-Electric	Modicom Bmxnor0200H Firmware	All versions
Schneider-Electric	Modicom Bmxnor0200H	-

Related Weaknesses (CWE)

CWE-640

References

https://security.cse.iitk.ac.in/responsible-disclosure
https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/Vendor Advisory
https://www.tenable.com/security/research/tra-2018-38ExploitThird Party Advisory
https://security.cse.iitk.ac.in/responsible-disclosure
https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/Vendor Advisory
https://www.tenable.com/security/research/tra-2018-38ExploitThird Party Advisory

FAQ

What is CVE-2018-7811?

CVE-2018-7811 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An Unverified Password Change vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 which could allow an unauthenticated remote user to access the ...

How severe is CVE-2018-7811?

CVE-2018-7811 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2018-7811?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Modicom M340 Firmware, Schneider-Electric Modicom M340, Schneider-Electric Modicom Premium Firmware, Schneider-Electric Modicom Premium, Schneider-Electric Modicom Quantum Firmware.