Vulnerability Monitor

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CVE-2018-7851


CWE-119: Buffer errors vulnerability exists in Modicon M580 with firmware prior to V2.50, Modicon M340 with firmware prior to V3.01, BMxCRA312xx with firmware prior to V2.40, All firmware versions of Modicon Premium and 140CRA312xxx when sending a specially crafted Modbus packet, which could cause a denial of service to the device that would force a restart to restore availability.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 41 products from schneider-electric, from schneider-electric, from schneider-electric and 38 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.


Published

2019-05-22T20:29:01.853

Last Modified

2024-11-21T04:12:52.710

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: SINGLE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

8.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-119
  • Type: Primary
    CWE-119

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System schneider-electric m580_firmware < 2.50 Yes
Hardware schneider-electric bmeh582040 - No
Hardware schneider-electric bmeh582040c - No
Hardware schneider-electric bmeh584040 - No
Hardware schneider-electric bmeh584040c - No
Hardware schneider-electric bmeh586040 - No
Hardware schneider-electric bmeh586040c - No
Hardware schneider-electric modicon_m580_bmep581020 - No
Hardware schneider-electric modicon_m580_bmep581020h - No
Hardware schneider-electric modicon_m580_bmep582020 - No
Hardware schneider-electric modicon_m580_bmep582020h - No
Hardware schneider-electric modicon_m580_bmep582040 - No
Hardware schneider-electric modicon_m580_bmep582040h - No
Hardware schneider-electric modicon_m580_bmep582040s - No
Hardware schneider-electric modicon_m580_bmep583020 - No
Hardware schneider-electric modicon_m580_bmep583040 - No
Hardware schneider-electric modicon_m580_bmep584020 - No
Hardware schneider-electric modicon_m580_bmep584040 - No
Hardware schneider-electric modicon_m580_bmep584040s - No
Hardware schneider-electric modicon_m580_bmep585040 - No
Hardware schneider-electric modicon_m580_bmep585040c - No
Hardware schneider-electric modicon_m580_bmep586040 - No
Hardware schneider-electric modicon_m580_bmep586040c - No
Operating System schneider-electric m340_firmware < 3.01 Yes
Hardware schneider-electric modicon_m340_bmxp341000 - No
Hardware schneider-electric modicon_m340_bmxp341000h - No
Hardware schneider-electric modicon_m340_bmxp342000 - No
Hardware schneider-electric modicon_m340_bmxp3420102 - No
Hardware schneider-electric modicon_m340_bmxp3420102cl - No
Hardware schneider-electric modicon_m340_bmxp342020 - No
Hardware schneider-electric modicon_m340_bmxp342020h - No
Hardware schneider-electric modicon_m340_bmxp3420302 - No
Hardware schneider-electric modicon_m340_bmxp3420302cl - No
Hardware schneider-electric modicon_m340_bmxp3420302h - No
Operating System schneider-electric bmx\/e_cra_firmware < 2.40 Yes
Hardware schneider-electric bmxcra31200 - No
Hardware schneider-electric bmxcra31210c - No
Operating System schneider-electric modicon_premium_firmware * Yes
Hardware schneider-electric modicon_premium - No
Operating System schneider-electric 140cra312xxx_firmware * Yes
Hardware schneider-electric 140cra312xxx - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For schneider-electric's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.