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CVE-2022-2081

HIGHCVSS 7.5/10EPSS 0.64%

Last modified

CVE-2022-2081 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.64%

45.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
HitachienergyRtu520 Firmware>= 12.0.1, <= 12.0.13
HitachienergyRtu520 Firmware>= 12.2.1, <= 12.2.11
HitachienergyRtu520 Firmware>= 12.4.1, <= 12.4.11
HitachienergyRtu520 Firmware>= 12.6.1, <= 12.6.7
HitachienergyRtu520 Firmware>= 12.7.1, <= 12.7.3
HitachienergyRtu520 Firmware>= 13.2.1, <= 13.2.4
HitachienergyRtu520 Firmware13.3.1
HitachienergyRtu530 Firmware>= 12.0.1, <= 12.0.13
HitachienergyRtu530 Firmware>= 12.2.1, <= 12.2.11
HitachienergyRtu530 Firmware>= 12.4.1, <= 12.4.11
HitachienergyRtu530 Firmware>= 12.6.1, <= 12.6.7
HitachienergyRtu530 Firmware>= 12.7.1, <= 12.7.3
HitachienergyRtu530 Firmware>= 13.2.1, <= 13.2.4
HitachienergyRtu530 Firmware13.3.1
HitachienergyRtu540 Firmware>= 12.0.1, <= 12.0.13
HitachienergyRtu540 Firmware>= 12.2.1, <= 12.2.11
HitachienergyRtu540 Firmware>= 12.4.1, <= 12.4.11
HitachienergyRtu540 Firmware>= 12.6.1, <= 12.6.7
HitachienergyRtu540 Firmware>= 12.7.1, <= 12.7.3
HitachienergyRtu540 Firmware>= 13.2.1, <= 13.2.4
HitachienergyRtu540 Firmware13.3.1
HitachienergyRtu560 Firmware>= 12.0.1, <= 12.0.13
HitachienergyRtu560 Firmware>= 12.2.1, <= 12.2.11
HitachienergyRtu560 Firmware>= 12.4.1, <= 12.4.11
HitachienergyRtu560 Firmware>= 12.6.1, <= 12.6.7
HitachienergyRtu560 Firmware>= 12.7.1, <= 12.7.3
HitachienergyRtu560 Firmware>= 13.2.1, <= 13.2.4
HitachienergyRtu560 Firmware13.3.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2022-2081?
CVE-2022-2081 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.
How do I fix CVE-2022-2081?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-2081?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST