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CVE-2018-7790

nvd nist
Published: Aug 29, 2018Modified: May 29, 2026

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9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

Description

An Information Management Error vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows unauthorized users to replay authentication sequences. If an attacker exploits this vulnerability and connects to a Modicon M221, the attacker can upload the original program from the PLC.

Affected (1)

Schneider Electric
1 product
Modicon M221 Firmware
Configuration A
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Modicon M221 Firmware
Before 1.6.2.0
Running on/withPlatform Versions
Schneider Electric
Modicon M221
All versions

Related CWEs

CWE-294
Authentication Bypass by Capture-replay
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).

References (4)

Source: cybersecurity@se.com
Third Party AdvisoryVDB Entry
Source: cybersecurity@se.com
MitigationVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
MitigationVendor Advisory

Timeline

No history available yet.