Buffer overflow in Modbus Tools Slave
CVE-2022-4856
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (46.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Modbus Tools Slave — versions 7.5.0, 7.5.1
- Modbustools Modbus Slave
Weakness classification (CWE)
References
- vuldb.com/ (Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, permissions-required, Third Party Advisory)
- github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus Slave/Modbus Slave (ve… (related, Exploit, Patch, Third Party Advisory)
- github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus Slave/poc/poc.mbs (Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2022-4856?
- CVE-2022-4856 is a medium-severity vulnerability in Modbus Tools Slave, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.3/10. Published 2022-12-30.
- How severe is CVE-2022-4856?
- Medium severity. CVSS v3 base score is 6.3 out of 10.