Vulnerability in Mitsubishielectric Fx3u-Enet
CVE-2021-20612
Lack of administrator control over security vulnerability in MELSEC-F series FX3U-ENET Firmware version 1.14 and prior, FX3U-ENET-L Firmware version 1.14 and prior and FX3U-ENET-P502 Firmware version 1.14 and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in communication function of the product or other unspecified effects by sending specially crafted packets to an unnecessary opening of TCP port. Control by MELSEC-F series PLC is not affected by this vulnerability, but system reset is required for recovery.
EPSS: 0.036 (88.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mitsubishielectric Fx3u-enet
- Mitsubishielectric Fx3u-enet_firmware
- Mitsubishielectric Fx3u-enet-l
- Mitsubishielectric Fx3u-enet-l_firmware
- Mitsubishielectric Fx3u-enet-p502
- Mitsubishielectric Fx3u-enet-p502_firmware
- N/a Melsec-f Series Fx3u-enet; Fx3u-enet-l; Fx3u-enet-p502 — versions Firmware version 1.14 and prior
References
- Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (x_refsource_MISC, Vendor Advisory)
- Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (VDB Entry, Third Party Advisory, x_refsource_MISC)
- Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (US Government Resource, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-20612?
- CVE-2021-20612 is a high-severity vulnerability in Mitsubishielectric Fx3u-Enet. CVSS score: 7.5/10. Published 2022-01-14.
- How severe is CVE-2021-20612?
- High severity. CVSS v3 base score is 7.5 out of 10.