CVE-2020-7549

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-754

Affected software

VendorProductVersions
n/aWeb Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions)Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions)

References

Timeline

Published
Dec 11, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-75507.8A CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in IGSS Definition (Def.exe) version CVE-2020-75517.8A CWE-787: Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247, that could cause Remote Code ExecutioCVE-2020-75527.8A CWE-787: Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247, that could cause Remote Code ExecutioCVE-2020-75537.8A CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution CVE-2020-75547.8A CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in IGSS Definition (Def.exe) version CVE-2020-75557.8A CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution CVE-2020-75567.8A CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution CVE-2020-75577.8A CWE-125 Out-of-bounds Read vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution wCVE-2020-75587.8A CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution CVE-2020-75597.5A CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability exists in PLC Simulator on EcoStruxureª ContCVE-2020-75608.6A CWE-123: Write-what-where Condition vulnerability exists in EcoStruxure™ Control Expert (all versions) and Unity Pro (former name of EcoStCVE-2020-75619.8A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T300 (with firmware 2.7 and older) that could cause