CVE-2006-4266

What it is

Symantec Norton Personal Firewall 2006 9.1.0.33, and possibly earlier, does not properly protect Norton registry keys, which allows local users to provide Trojan horse libraries to Norton by using RegSaveKey and RegRestoreKey to modify HKLM\SOFTWARE\Symantec\CCPD\SuiteOwners, as demonstrated using NISProd.dll. NOTE: in most cases, this attack would not cross privilege boundaries, because modifying the SuiteOwners key requires administrative privileges. However, this issue is a vulnerability because the product's functionality is intended to protect against privileged actions such as this.

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

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

Timeline

1. 2006-08-21 21:04 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:28 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: 3.6 LOW (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2006-08-21 21:04 UTC

Last modified

2026-06-16 22:28 UTC

Exploit probability

0.4% · EPSS, next 30 days

Record status

Modified

Affected

• Symantec Norton Personal Firewall ≤ 2006_9.1.0.33

Attack profile CVSS 2.0 · 3.6

Attack vector

Local

Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

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-2006-4266.md and follow it. Check whether this project is affected by CVE-2006-4266. 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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