CVE-2018-7842
CVSS v3
9.8
CRITICAL
EPSS Score
35.0 %
exploit probability, as of 2026-10-18
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Schneider Electric Modicon Controllers (Update A)
Modicon M580 Firmware Versions prior to v2.90 installed on Modicon M580 Controller · Modicon M340 Firmware Versions prior to v3.10 installed on Modicon M340 Controller · Modicon Quantum Firmware All Versions installed on Modicon Quantum Controller
Description
A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege by conducting a brute force attack on Modbus parameters sent to the controller.
Technical details
- Published
- 2019-05-22
Frequently asked questions
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