CVE-2024-8935 - CVE House
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Status published High CVE-2024-8935

CWE-290: Authentication Bypass by Spoofing vulnerability exists that could cause...

Vulnerability Description

CWE-290: Authentication Bypass by Spoofing vulnerability exists that could cause a denial of service and loss of confidentiality and integrity of controllers when conducting a Man-In-The-Middle attack between the controller and the engineering workstation while a valid user is establishing a communication session. This vulnerability is inherent to Diffie Hellman algorithm which does not protect against Man-In-The-Middle attacks.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Schneider Electric

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Affected Software

Modicon M340 CPU (part numbers BMXP34*), Modicon MC80 (part numbers BMKC80), Modicon Momentum Unity M1E Processor (171CBU*)
Vulnerable Versions:
All versions since SV3.60, All versions, All Versions

Timeline

Official Publish: November 13th, 2024
Last Modified: November 13th, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-290

MITRE ATT&CK TTPs

T1557 Adversary-in-the-Middle
Collection
T1078 Valid Accounts
Persistence
T1550 Use Alternate Authentication Material
Defense Evasion
T1021 Remote Services
Lateral Movement
T1190 Exploit Public-Facing Application
Initial Access