CVE-2007-6026Jet Memory Corruption
Stack-based buffer overflow in Microsoft msjet40.dll 4.0.8618.0 (aka Microsoft Jet Engine), as used by Access 2003 in Microsoft Office 2003 SP3, allows user-assisted attackers to execute arbitrary code via a crafted MDB file database file containing a column structure with a…
Published Nov 19, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-6026 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Jet (Microsoft), Office (Microsoft), Windows 2000 (Microsoft) and 3 more products.
- It is exploited in the wild, listed in Industry KEV feed since May 13, 2008. Public exploit code is available.
- EPSS estimates a 28% 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)
28%
Higher than 98.1% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
36/100
Publication score, see How it works
Exploitation Verdict
KEV listed
May 13, 2008
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Description
Stack-based buffer overflow in Microsoft msjet40.dll 4.0.8618.0 (aka Microsoft Jet Engine), as used by Access 2003 in Microsoft Office 2003 SP3, allows user-assisted attackers to execute arbitrary code via a crafted MDB file database file containing a column structure with a modified column count. NOTE: this might be the same issue as CVE-2005-0944.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | May 13, 2008 | n/a | Not reported |
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| JetMicrosoft | 4.0.8618.0 | n/a |
| OfficeMicrosoft | 2003-sp3 | n/a |
| Windows 2000Microsoft | See advisory | n/a |
| Windows 2003 ServerMicrosoft | See advisory | n/a |
| Windows NtMicrosoft | 4.0 | n/a |
Timeline
Publicly disclosed
Nov 19, 2007
Added to Industry KEV feed
May 13, 2008
Last updated
Apr 22, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- exploitVulnCheck exploitation report
- exploitExploitDB-4625
- otherdvlabs.tippingpoint.com · TPTI-08-04
- other20071116 Microsoft Jet Engine MDB File Parsing Stack Overflow Vulnerability
- otherSSRT080071
FAQ
Common Questions.
Stack-based buffer overflow in Microsoft msjet40.dll 4.0.8618.0 (aka Microsoft Jet Engine), as used by Access 2003 in Microsoft Office 2003 SP3, allows user-assisted attackers to execute arbitrary code via a crafted MDB file database file containing a column structure with a modified column count.
Affected: Jet (Microsoft) versions 4.0.8618.0; Office (Microsoft) versions 2003-sp3; Windows 2000 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since May 13, 2008.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
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-2007-6026 On Your Attack Surface?
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