---
title: "Security digest: November 3, 2011"
url: https://erroneo.us/security/2011-11-03/
description: "November 3, 2011 vulnerability digest: 1 brief (Old Windows Bugs in KEV: Duqu Font, IE ActiveX…). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2011-11-03
date_modified: 2026-10-23
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: November 3, 2011

1 editorial brief.

## Take stock

- Check exposure: Old Windows Bugs in KEV: Duqu Font, IE ActiveX, CLFS . Owners of Windows hosts with no cumulative update since December 2021, and of any XP, Vista, 7, 8 or Server 2003/2008 machines still running in labs, factories or legacy applications.
- None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.

## Editorial briefs

- **Check exposure** [Old Windows Bugs in KEV: Duqu Font, IE ActiveX, CLFS](https://erroneo.us/security/briefs/windows-cve-2011-3402-2013-3918-2021-43226-old-kev/index.md): All three bugs were fixed between 2011 and 2021 and are closed on any supported Windows host that takes monthly updates; the real job is finding machines that missed years of patches or still run end-of-life Windows.

## Known exploited (CISA KEV)

None.

## Critical advisories

None.

---
Source page: https://erroneo.us/security/2011-11-03/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt