Critical severity9.8NVD Advisory· Published Aug 29, 2018· Updated Jun 17, 2026
CVE-2018-7790
CVE-2018-7790
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 products
3cpe:2.3:o:schneider-electric:modicon_m221_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:schneider-electric:modicon_m221_firmware:*:*:*:*:*:*:*:*range: <1.6.2.0
- (no CPE)range: <1.6.2.0
- Schneider Electric SE/Modicon M221, all references, all versions prior to firmware V1.6.2.0v5Range: Modicon M221, all references, all versions prior to firmware V1.6.2.0
Patches
Vulnerability mechanics
References
2- www.securityfocus.com/bid/105182nvdThird Party AdvisoryVDB Entry
- www.schneider-electric.com/en/download/document/SEVD-2018-235-01/nvdMitigationVendor Advisory
News mentions
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