A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause denial of HTTP and FTP services when a series of specially crafted requests is sent to the controller over HTTP.
History

Fri, 29 May 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: schneider

Published: 2020-12-11T00:52:26.000Z

Updated: 2026-05-28T21:05:18.170Z

Reserved: 2020-01-21T00:00:00.000Z

Link: CVE-2020-7549

cve-icon Vulnrichment

Updated: 2024-08-04T09:33:19.948Z

cve-icon NVD

Status : Modified

Published: 2020-12-11T01:15:12.627

Modified: 2026-05-28T22:16:57.820

Link: CVE-2020-7549

cve-icon Redhat

No data.