CVE-2018-7790
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductSchneider-electric Modicon M221 Firmware
PublishedAug 29, 2018
First seenAug 29, 2018
Weakness typeCWE-294CWE-294
How to fix
Update
- schneider-electric modicon_m221_firmware1.6.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| schneider-electric modicon_m221_firmware | v < 1.6.2.0 | 1.6.2.0 |
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