CVE-2023-27975

Schneider Electric Modicon Momentum Unity M1E Processor Controller — vulnerability CVE-2023-27975

CWE-522: Insufficiently Protected Credentials vulnerability exists that could cause unauthorized access to the project file in EcoStruxure Control Expert when a local user tampers with the memory of the engineering workstation.

CVSS 7.1Patch available

This record: live connection— last retrieved: 7 November 2026 at 15:53.

Vendor

Schneider Electric

Products

Modicon Momentum Unity M1E Processor Controller, Modicon MC80

up to version vers:intdot/<16.0

Published

14 February 2024

Last modified

17 June 2026

Original source information

Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.

Technical description

CVSS 3.1 — vector details

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

Attack vector

LOCAL

Privileges required

LOW

User interaction

NONE

Confidentiality

High

Integrity

High

Availability

None

EPSS — Exploit Prediction Scoring System

Probability of exploitation within 30 days

0.1%

Percentile

Source: FIRST.org, updated on 6 November 2026.

Patch information

SV3.60 of Modicon M340 firmware includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/1468- modicon-m340

IACS Radar assessment

Our own interpretation and context for the source data above.

IACS Radar assessment

Our own interpretation and context for this vulnerability — not an official source.

IACS Radar priority score

51/ 100

Based on CVSS 7.1, EPSS 0.1%, industrial relevance 75/100.

Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.

Conditions for exploitation

•Local or adjacent access to the device is required.
•Limited user privileges are required.
•No user interaction required.

Operational impact & energy relevance

Limited impact on availability; the risk lies mainly with confidentiality or integrity of process data.

Assessed as relevant to the energy sector based on: Vermeld in een officiële CISA ICS Advisory, wat directe relevantie voor industriële besturingssystemen bevestigt. Productbeschrijving komt overeen met de categorie "engineering-workstation", een typisch OT/ICS-componenttype. Vendor "Schneider Electric" is a known supplier of equipment for the energy sector.

Recommended defensive measures

•Change default or hardcoded credentials and restrict access to the management interface.
•Encrypt sensitive configuration and management communication.
•Restrict network access to the affected device to a dedicated OT management segment.
•Implement network segmentation in line with zones and conduits (IEC 62443-3-2).

Industrial relevance score

75/ 100

• Mentioned in an official CISA ICS advisory, which confirms direct relevance to industrial control systems.
• Product description matches the category "engineering-workstation", a typical OT/ICS component type.
• Vendor "Schneider Electric" is a known supplier of equipment for the energy sector.

Automatically classified as industrially relevant based on CISA/NVD signals (see reasons).

Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 7 November 2026.

IEC 62443 mapping

IEC 62443-4-2FR1 · Identificatie- en authenticatiebeheerFR4 · Vertrouwelijkheid van gegevens

Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.

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