Vulnerability in Schneider Electric Modicon M340 CPU (Part Numbers Bmxp34*)
CVE-2024-8935
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Schneider Electric Modicon M340 CPU (Part Numbers Bmxp34*) — versions All versions since SV3.60
- Schneider Electric Modicon Mc80 (Part Numbers Bmkc80) — versions All versions
- Schneider Electric Modicon Momentum Unity M1e Processor (171cbu*) — versions All Versions
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2024-8935?
- CVE-2024-8935 is a high-severity vulnerability in Schneider Electric Modicon M340 CPU (Part Numbers Bmxp34*), classified under Authentication Bypass by Spoofing. CVSS score: 7.5/10. Published 2024-11-13.
- How severe is CVE-2024-8935?
- High severity. CVSS v3 base score is 7.5 out of 10.