CVE-2009-0079

What it is

The RPCSS service in Microsoft Windows XP SP2 and SP3 and Server 2003 SP1 and SP2 does not properly implement isolation among a set of distinct processes that (1) all run under the NetworkService account or (2) all run under the LocalService account, which allows local users to gain privileges by accessing the resources of one of the processes, aka "Windows RPCSS Service Isolation Vulnerability."

At a glance

Exploitability

Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

4.1% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2009-04-15 08:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:04 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.1% in the next 30 days (EPSS).
• Severity: 6.9 MEDIUM (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2009-04-15 08:00 UTC

Last modified

2026-06-16 23:04 UTC

Exploit probability

4.1% · EPSS, next 30 days

Weakness

CWE-264

Record status

Modified

Affected

• Microsoft Windows Server 2003
• Microsoft Windows Xp

Attack profile CVSS 2.0 · 6.9

Attack vector

Local

Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-0079.md and follow it. Check whether this project is affected by CVE-2009-0079. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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