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CVE-2020-5543

9.8 criticalEPSS 2.2%

Critical (9.8) in mitsubishielectric iu1-1m20-d firmware. EPSS 2.2% chance of exploitation in the next 30 days.

TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier does not properly manage sessions, which allows remote attackers to stop the network functions or execute malware via a specially crafted packet.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.2% chance of exploitation in the next 30 days; higher than 82% of CVEs (scores of 2026-10-31)
CWE
CWE-384
Published
Modified
Record from
the NVD, synced

Affected

References

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