CVE-2006-4534Office Vulnerability
Unspecified vulnerability in Microsoft Word 2000, 2002, and Office 2003 allows remote user-assisted attackers to execute arbitrary code via unspecified vectors involving a crafted file resulting in a malformed stack, as exploited by malware with names including…
Published Sep 5, 2006 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2006-4534 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Office (Microsoft).
- It is exploited in the wild, listed in Industry KEV feed since Oct 10, 2006. No public exploit code is known.
- EPSS estimates a 34% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
34%
Higher than 98.4% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
57/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Oct 10, 2006
35 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
- advisoryhttp://blogs.securiteam.com/?p=586
- advisoryhttp://isc.sans.org/diary.php?storyid=1669
- advisory21735
- advisory1016787
- advisoryms-word-code-execution(28775)
- advisoryoval:org.mitre.oval:def:578
Description
Unspecified vulnerability in Microsoft Word 2000, 2002, and Office 2003 allows remote user-assisted attackers to execute arbitrary code via unspecified vectors involving a crafted file resulting in a malformed stack, as exploited by malware with names including Trojan.Mdropper.Q, Mofei, and Femo.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Oct 10, 2006 | n/a | Not reported |
Affected Products
14 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| OfficeMicrosoft | 2000, 2000-sp1, 2000-sp2, 2000-sp3, 2001, 2001-sr1, 2003, 2003-sp1 | n/a |
Timeline
Publicly disclosed
Sep 5, 2006
Added to Industry KEV feed
Oct 10, 2006
Last updated
Apr 15, 2026
References
- advisoryblogs.securiteam.com
- advisoryisc.sans.org · diary.php
- advisory21735
- advisory1016787
- advisoryms-word-code-execution(28775)
FAQ
Common Questions.
Unspecified vulnerability in Microsoft Word 2000, 2002, and Office 2003 allows remote user-assisted attackers to execute arbitrary code via unspecified vectors involving a crafted file resulting in a malformed stack, as exploited by malware with names including Trojan.Mdropper.Q, Mofei, and Femo.
Affected: Office (Microsoft) versions 2000, 2000-sp1, 2000-sp2, 2000-sp3, 2001, 2001-sr1, 2003, 2003-sp1. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Oct 10, 2006.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2006-4534 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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