Home/CVE/A CWE-191: Integer Underflow (Wrap or Wraparound) vulnerability exists that could cause a denial of service of the contr
CVE

CVE-2022-37301

A CWE-191: Integer Underflow (Wrap or Wraparound) vulnerability exists that could cause a denial of service of the contr

A CWE-191: Integer Underflow (Wrap or Wraparound) vulnerability exists that could cause a denial of service of the controller due to memory access violations when using the Modbus TCP protocol. Affected products: Modicon M340 CPU (part numbers BMXP34)(V3.40 and prior), Modicon M580 CPU (part numbers BMEP and BMEH)(V3.22 and prior), Legacy Modicon Quantum/Premium(All Versions), Modicon Momentum MDI (171CBU)(All Versions), Modicon MC80 (BMKC80)(V1.7 and prior)

HIGH · CVSS 7.5 EPSS 0.00536
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-191Integer Underflow (Wrap or Wraparound)
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Affected Products & Versions

48
schneider-electric modicon m340 bmx p34-2010 firmware< 3.50
schneider-electric modicon m340 bmx p34-2030 firmware< 3.50
schneider-electric modicon m580 bmeh582040 firmware< 4.01
schneider-electric modicon m580 bmeh582040c firmware< 4.01
schneider-electric modicon m580 bmeh582040s firmware< 4.01
schneider-electric modicon m580 bmeh584040 firmware< 4.01
schneider-electric modicon m580 bmeh584040c firmware< 4.01
schneider-electric modicon m580 bmeh584040s firmware< 4.01
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Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cybersecurity@se.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Nov 2022 · 12:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.se.com/us/en/download/document/SEVD-2022-221-02/Vendor Advisory
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