CVE-2007-3899Office Code Injection
Unspecified vulnerability in Microsoft Word 2000 SP3, Word 2002 SP3, and Office 2004 for Mac allows user-assisted remote attackers to execute arbitrary code via a malformed string in a Word file, aka "Word Memory Corruption Vulnerability."
Published Oct 9, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-3899 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Office (Microsoft), Word (Microsoft).
- It is exploited in the wild, listed in Industry KEV feed since Oct 9, 2007. No public exploit code is known.
- EPSS estimates a 29% 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)
29%
Higher than 98.1% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
48/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Oct 9, 2007
0 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
Description
Unspecified vulnerability in Microsoft Word 2000 SP3, Word 2002 SP3, and Office 2004 for Mac allows user-assisted remote attackers to execute arbitrary code via a malformed string in a Word file, aka "Word Memory Corruption Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Oct 9, 2007 | n/a | Not reported |
Affected Products
5 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| OfficeMicrosoft | 2000-sp3, 2004, xp-sp3 | n/a |
| WordMicrosoft | 2000-sp3, 2002-sp3 | n/a |
Timeline
Publicly disclosed
Oct 9, 2007
Added to Industry KEV feed
Oct 9, 2007
Last updated
Apr 22, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- exploitVulnCheck exploitation report
- otherMS07-060
- other27151
- other1018790
- otheroval:org.mitre.oval:def:1879
FAQ
Common Questions.
Unspecified vulnerability in Microsoft Word 2000 SP3, Word 2002 SP3, and Office 2004 for Mac allows user-assisted remote attackers to execute arbitrary code via a malformed string in a Word file, aka "Word Memory Corruption Vulnerability."
Affected: Office (Microsoft) versions 2000-sp3, 2004, xp-sp3; Word (Microsoft) versions 2000-sp3, 2002-sp3. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Oct 9, 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-2007-3899 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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