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CVE-2020-7523

19
FAUCET Score

CVE-2020-7523 is an Improper Privilege Management vulnerability affecting Schneider Electric Modbus Serial Driver and Modbus Driver Suite. This flaw allows for local privilege escalation when the driver service is invoked, due to improper handling of user privileges. Rated 7.8 HIGH on CVSS, an attacker with low privileges can achieve high impact on confidentiality, integrity, and availability with high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.15.0.0CPE matchmatch criteria
cpe:2.3:a:schneider-electric:modbus_driver_suite:*:*:*:*:*:*:*:*
< 2.20_ie_30CPE matchmatch criteria
cpe:2.3:a:schneider-electric:modbus_serial_driver:*:*:*:*:*:*:x86:*
< 3.20_ie_30CPE matchmatch criteria
cpe:2.3:a:schneider-electric:modbus_serial_driver:*:*:*:*:*:*:x64:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
9.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 33rd percentile among its peer group of 1,525 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

se.com / ww/en/download/document/SEVD-2020-224-01
Vendor Advisory