CVE-2022-4856

Name: CVE-2022-4856
Creator: NVD / NIST
Published: 2022-12-30T10:15:09.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2022-4856 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A vulnerability has been found in Modbus Tools Modbus Slave up to 7.5.1 and classified as critical. Affected by this vulnerability is an unknown functionality of the file mbslave.exe of the component mbs File Handler. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

A vulnerability has been found in Modbus Tools Modbus Slave up to 7.5.1 and classified as critical. Affected by this vulnerability is an unknown functionality of the file mbslave.exe of the component mbs File Handler. The manipulation leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-217021 was assigned to this vulnerability.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.59%

43.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Modbustools	Modbus Slave	<= 7.5.1

References

https://github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus%20Slave/Modbus%20Slave%20(version%207.5.1%20and%20earlier)%20mbs%20file%20has%20a%20buffer%20overflow%20vulnerability.mdExploit, Patch, Third Party Advisory
https://github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus%20Slave/poc/poc.mbsThird Party Advisory
https://vuldb.com/?ctiid.217021Third Party Advisory
https://vuldb.com/?id.217021Third Party Advisory
https://github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus%20Slave/Modbus%20Slave%20(version%207.5.1%20and%20earlier)%20mbs%20file%20has%20a%20buffer%20overflow%20vulnerability.mdExploit, Patch, Third Party Advisory
https://github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus%20Slave/poc/poc.mbsThird Party Advisory
https://vuldb.com/?ctiid.217021Third Party Advisory
https://vuldb.com/?id.217021Third Party Advisory

Timeline

Published: Dec 30, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-4856?

How severe is CVE-2022-4856?

CVE-2022-4856 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2022-4856?

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-2022-4856?

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

Scan your code now

Source: NVD / NIST