Buffer overflow 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.
This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 10 products from mitsubishielectric, from mitsubishielectric, from mitsubishielectric and 7 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2020-11-02T21:15:33.757
2024-11-21T05:34:25.853
Modified
CVSSv3.1: 9.8 (CRITICAL)
AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | mitsubishielectric | melsec_iq-rj71eip91_firmware | - | Yes |
| Hardware | mitsubishielectric | melsec_iq-rj71eip91 | - | No |
| Operating System | mitsubishielectric | melsec_iq-rj71pn92_firmware | - | Yes |
| Hardware | mitsubishielectric | melsec_iq-rj71pn92 | - | No |
| Operating System | mitsubishielectric | melsec_iq-rd81dl96_firmware | - | Yes |
| Hardware | mitsubishielectric | melsec_iq-rd81dl96 | - | No |
| Operating System | mitsubishielectric | melsec_iq-rd81mes96n_firmware | - | Yes |
| Hardware | mitsubishielectric | melsec_iq-rd81mes96n | - | No |
| Operating System | mitsubishielectric | melsec_iq-rd81opc96_firmware | - | Yes |
| Hardware | mitsubishielectric | melsec_iq-rd81opc96 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For mitsubishielectric's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.