CVE-2020-7523

HIGH
7.8
CVSS Score
Published: August 31, 2020 at 04:11 PM UTC
Updated: June 17, 2026 at 03:24 AM UTC
2 products affected across 1 vendorModbus Serial DriverModbus Driver Suite

Using Schneider Electric Modbus Serial Driver (64 bits) versions prior to V3.20 IE 30, Schneider Electric Modbus Serial Driver (32 bits) versions prior to V2.20 IE 30, and Schneider Electric Modbus Driver Suite versions prior to V14.15.0.0 by N/A?

Get instant alerts when new vulnerabilities affect Schneider Electric Modbus Serial Driver (64 bits) versions prior to V3.20 IE 30, Schneider Electric Modbus Serial Driver (32 bits) versions prior to V2.20 IE 30, and Schneider Electric Modbus Driver Suite versions prior to V14.15.0.0 - before attackers find them.

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

Description

Improper Privilege Management vulnerability exists in Schneider Electric Modbus Serial Driver (see security notification for versions) which could cause local privilege escalation when the Modbus Serial Driver service is invoked. The driver does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 14.15.0.0v < 3.20
Affected range stops below 14.15.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.20, so it looks safe — our inference, not a vendor statement
v < 2.20_ie_30v < 3.20v < 3.20_ie_30
Affected range stops below 2.20_ie_30, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.20_ie_30, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

CVSS

Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-269

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