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Fencer Vulns
high 7.5

CVE-2022-37301 json

A CWE-191: Integer Underflow (Wrap or Wraparound) vulnerability exists that could cause a denial of service of the controller due to memory…

published 2022-11-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-39937

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

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)

Patch / fix

  • 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
  • schneider-electric modicon_m580_bmeh586040_firmware 4.01
  • schneider-electric modicon_m580_bmeh586040c_firmware 4.01
  • schneider-electric modicon_m580_bmeh586040s_firmware 4.01
  • schneider-electric modicon_m580_bmep581020_firmware 4.01
  • schneider-electric modicon_m580_bmep581020h_firmware 4.01
  • schneider-electric modicon_m580_bmep582020_firmware 4.01
  • schneider-electric modicon_m580_bmep582020h_firmware 4.01
  • schneider-electric modicon_m580_bmep582040_firmware 4.01
  • schneider-electric modicon_m580_bmep582040h_firmware 4.01
  • schneider-electric modicon_m580_bmep582040s_firmware 4.01
  • schneider-electric modicon_m580_bmep583020_firmware 4.01
  • schneider-electric modicon_m580_bmep583040_firmware 4.01

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Schneider Electric Modicon M340 CPU (part numbers BMXP34*)
  • Schneider Electric Modicon M580 CPU (part numbers BMEP* and BMEH*)
  • Schneider Electric Legacy Modicon Quantum/Premium
  • Schneider Electric Modicon Momentum MDI (171CBU*)
  • Schneider Electric Modicon MC80 (BMKC80)

Classification

Weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound)

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.