CVE-2006-6456Word Vulnerability
Unspecified vulnerability in Microsoft Word 2000, 2002, and 2003 and Word Viewer 2003 allows remote attackers to execute code via unspecified vectors related to malformed data structures that trigger memory corruption, a different vulnerability than CVE-2006-5994.
Published Dec 11, 2006 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2006-6456 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Office (Microsoft), Word (Microsoft), Word Viewer (Microsoft) and 1 more product.
- It is exploited in the wild, listed in Industry KEV feed since Feb 13, 2007. No public exploit code is known.
- EPSS estimates a 32% 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)
32%
Higher than 98.3% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
57/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Feb 13, 2007
64 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
Description
Unspecified vulnerability in Microsoft Word 2000, 2002, and 2003 and Word Viewer 2003 allows remote attackers to execute code via unspecified vectors related to malformed data structures that trigger memory corruption, a different vulnerability than CVE-2006-5994.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Feb 13, 2007 | n/a | Not reported |
Affected Products
11 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| OfficeMicrosoft | 2000-sp3, 2003-sp2, 2004, xp-sp3 | n/a |
| WordMicrosoft | 2000, 2002, 2003 | n/a |
| Word ViewerMicrosoft | 2003 | n/a |
| WorksMicrosoft | 2004, 2005, 2006 | n/a |
Timeline
Publicly disclosed
Dec 11, 2006
Added to Industry KEV feed
Feb 13, 2007
Last updated
Apr 22, 2026
References
- advisoryblogs.technet.com · new-report-of-a-word-zero-day.aspx
- advisoryisc.sans.org · diary.php
- advisory23205
- advisoryvil.mcafeesecurity.com · v_141056.htm
- advisoryvil.mcafeesecurity.com · v_vul27249.htm
FAQ
Common Questions.
Unspecified vulnerability in Microsoft Word 2000, 2002, and 2003 and Word Viewer 2003 allows remote attackers to execute code via unspecified vectors related to malformed data structures that trigger memory corruption, a different vulnerability than CVE-2006-5994.
Affected: Office (Microsoft) versions 2000-sp3, 2003-sp2, 2004, xp-sp3; Word (Microsoft) versions 2000, 2002, 2003; Word Viewer (Microsoft) versions 2003, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Feb 13, 2007.
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-2006-6456 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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