Buffer overflow in Hitachi Energy Rtu500 Series Cmu Firmware
CVE-2022-2081
A vulnerability exists in the HCI Modbus TCP function included in the product versions listed above. If the HCI Modbus TCP is enabled and configured, an attacker could exploit the vulnerability by sending a specially crafted message to the RTU500 in a high rate, causing the targeted RTU500 CMU to reboot. The vulnerability is caused by a lack of flood control which eventually if exploited causes an internal stack overflow in the HCI Modbus TCP function.
Vulnerability class: Buffer Overflow
EPSS: 0.006 (46.8th 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
- Hitachi Energy Rtu500 Series Cmu Firmware — versions 12.0.1.0, 12.2.1.0, 12.4.1.0
- Hitachienergy Rtu520
- Hitachienergy Rtu520_firmware — versions 13.3.1
- Hitachienergy Rtu530
- Hitachienergy Rtu530_firmware — versions 13.3.1
- Hitachienergy Rtu540
- Hitachienergy Rtu540_firmware — versions 13.3.1
- Hitachienergy Rtu560
- Hitachienergy Rtu560_firmware — versions 13.3.1
Weakness classification (CWE)
References
- cybersecurity@hitachienergy.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-2081?
- CVE-2022-2081 is a high-severity vulnerability in Hitachi Energy Rtu500 Series Cmu Firmware, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2024-01-04.
- How severe is CVE-2022-2081?
- High severity. CVSS v3 base score is 7.5 out of 10.