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CVE-2018-7790

Severity
CRITICAL
CVSS
9.8
EPSS
0.02478
Risk score
40.07
CISA KEV
No
PoC
No
Published
2018-08-29
Modified
2026-05-29
First seen
2026-08-07
Aliases
EUVD-2018-19502, GHSA-XVMG-MF7X-G2HX
Products
Schneider Electric SE:Modicon M221, all references, all versions prior to firmware V1.6.2.0 Modicon M221, all references, all versions prior to firmware V1.6.2.0
Sources
euvd EUVD-2018-19502

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.

References