CVE-2019-6852 — A CWE-200: Information Exposure vulnerability exists in Modicon Controllers (M340 CPUs, M340 communication modules, Premium CPUs, Premium communication modules, Quantum CPUs, Quantum communication modules - see security notification for specific versions), which could cause the disclosure of FTP hardcoded credentials when using the Web server of the controller on an unsecure network

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HIGH

A CWE-200: Information Exposure vulnerability exists in Modicon Controllers (M340 CPUs, M340 communication modules, Premium CPUs, Premium communication modules, Quantum CPUs, Quantum communication modules - see security notification for specific versions), which could cause the disclosure of FTP hardcoded credentials when using the Web server of the controller on an unsecure network

Published Nov 20, 2019

7.5

HIGH

CVSS 3.1

EPSS 1.38%

Description

A CWE-200: Information Exposure vulnerability exists in Modicon Controllers (M340 CPUs, M340 communication modules, Premium CPUs, Premium communication modules, Quantum CPUs, Quantum communication modules - see security notification for specific versions), which could cause the disclosure of FTP hardcoded credentials when using the Web server of the controller on an unsecure network.

Affected products

Vendor Schneider Electric Product n/a Default
n/a
- Version
  M340 communication modules
  Status
  affected
  Constraints
  -
- Version
  Modicon Controllers (M340 CPUs
  Status
  affected
  Constraints
  -
- Version
  Premium CPUs
  Status
  affected
  Constraints
  -
- Version
  Premium communication modules
  Status
  affected
  Constraints
  -
- Version
  Quantum CPUs
  Status
  affected
  Constraints
  -
- Version
  Quantum communication modules - see security notification for specific versions)
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Schneider Electric

n/a

Version	Status	Constraints
M340 communication modules	affected	-
Modicon Controllers (M340 CPUs	affected	-
Premium CPUs	affected	-
Premium communication modules	affected	-
Quantum CPUs	affected	-
Quantum communication modules - see security notification for specific versions)	affected	-

Remediation

No remediation recorded yet.

Metrics

1.38% 0.01379

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01379

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.38% (0.01379)	71.10th	v5 (v2026.06.15)
Sep 20, 2026	1.38% (0.01379)	70.87th	v5 (v2026.06.15)
Jul 20, 2024	0.17% (0.00168)	54.13th	v3 (v2023.03.01)
Jul 10, 2024	0.17% (0.00168)	54.04th	v3 (v2023.03.01)
Mar 7, 2023	0.17% (0.00168)	51.99th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	10.85% (0.10855)	88.34th	v2 (v2022.01.01)
Feb 3, 2022	1.95% (0.01953)	49.98th	v1
Jan 6, 2022	1.95% (0.01953)	49.47th	v1
Jan 5, 2022	0.44% (0.00442)	28.89th	v5 (v2026.06.15)
Apr 14, 2021	0.44% (0.00442)	0.00th	v1

Weaknesses (1)

CWE-200

Exposure of Sensitive Information

References (2)

https://www.schneider-electric.com/ww/en/download/document/SEVD-2019-281-02/
x_refsource_CONFIRMNot ApplicableVendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2019-316-02%20/
Vendor Advisory

Link	Providers	Tags
https://www.schneider-electric.com/ww/en/download/document/SEVD-2019-281-02/		x_refsource_CONFIRMNot ApplicableVendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2019-316-02%20/		Vendor Advisory