Vulnerability Details : CVE-2020-5656
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.
Exploit prediction scoring system (EPSS) score for CVE-2020-5656
Probability of exploitation activity in the next 30 days: 0.50%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 73 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-5656
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
References for CVE-2020-5656
-
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-012.pdf
Vendor Advisory
-
https://jvn.jp/vu/JVNVU92513419/index.html
JVNVU#92513419: 三菱電機製 MELSEC iQ-R シリーズにおける複数の脆弱性Third Party Advisory
-
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-012_en.pdf
MITSUBISHI ELECTRIC Global websiteVendor Advisory
Products affected by CVE-2020-5656
- cpe:2.3:o:mitsubishielectric:melsec_iq-rj71eip91_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:melsec_iq-rj71pn92_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:melsec_iq-rd81dl96_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:melsec_iq-rd81mes96n_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:melsec_iq-rd81opc96_firmware:-:*:*:*:*:*:*:*