CVE-2021-20613
High
Description
Improper initialization vulnerability in MELSEC-F series FX3U-ENET Firmware version 1.16 and prior, FX3U-ENET-L Firmware version 1.16 and prior and FX3U-ENET-P502 Firmware version 1.16 and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in communication function of the product by sending specially crafted packets. Control by MELSEC-F series PLC is not affected by this vulnerability, but system reset is required for recovery.
SeverityHigh
CVSS7.5
Exploit probability—
ProductMitsubishielectric Fx3u-enet Firmware
PublishedJan 14, 2022
First seenJan 14, 2022
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mitsubishielectric fx3u-enet_firmware | v ≤ 1.16 | — |
| mitsubishielectric fx3u-enet-l_firmware | v ≤ 1.16 | — |
| mitsubishielectric fx3u-enet-p502_firmware | v ≤ 1.16 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.