CVE-2020-5656
Description
Improper access control vulnerability in TCP/IP function included in the firmware of MELSEC iQ-R series (RJ71EIP91 EtherNet/IP Network Interface Module First 2 digits of serial number are '02' or before, RJ71PN92 PROFINET IO Controller Module First 2 digits of serial number are '01' or before, RD81DL96 High Speed Data Logger Module First 2 digits of serial number are '08' or before, RD81MES96N MES Interface Module First 2 digits of serial number are '04' or before, and RD81OPC96 OPC UA Server Module First 2 digits of serial number are '04' or before) allows a remote unauthenticated attacker to stop the network functions of the products or execute a malicious program via a specially crafted packet.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mitsubishielectric melsec_iq-rj71eip91_firmware | No range specified | — |
| mitsubishielectric melsec_iq-rj71pn92_firmware | No range specified | — |
| mitsubishielectric melsec_iq-rd81dl96_firmware | No range specified | — |
| mitsubishielectric melsec_iq-rd81mes96n_firmware | No range specified | — |
| mitsubishielectric melsec_iq-rd81opc96_firmware | No range specified | — |
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