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CVE-2017-6030 PUBLISHED CVSS 6.5 MEDIUM

A Predictable Value Range from Previous Values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections.

EPSS 0.40% · 60.3th percentile

Risk Scores

CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
EPSS Score
0.40%
60.3th percentile

Affected Products

VendorProductVersions
schneider-electricmodicon_m241_firmware0
n/aSchneider Electric Modicon PLCsSchneider Electric Modicon PLCs
schneider-electricmodicon_m221_firmware0
schneider-electricmodicon_m251_firmware0

Timeline

References

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