CVE-2008-3866

What it is

The Trend Micro Personal Firewall service (aka TmPfw.exe) in Trend Micro Network Security Component (NSC) modules, as used in Trend Micro OfficeScan 8.0 SP1 Patch 1 and Internet Security 2007 and 2008 17.0.1224, relies on client-side password protection implemented in the configuration GUI, which allows local users to bypass intended access restrictions and change firewall settings by using a modified client to send crafted packets.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. Limited direct impact.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2009-01-21 20:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:56 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 4.6 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2009-01-21 20:30 UTC

Last modified

2026-06-16 22:56 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-287 · Improper authentication

Record status

Modified

Affected

• Trend Micro Internet Security 2007
• Trend Micro Internet Security 2008 17.0.1224
• Trend Micro Officescan 8.0

Attack profile CVSS 2.0 · 4.6

Attack vector

Local

Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

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-2008-3866.md and follow it. Check whether this project is affected by CVE-2008-3866. 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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