CVE-2007-4776Visual Basic Memory Corruption
Buffer overflow in Microsoft Visual Basic 6.0 and Enterprise Edition 6.0 SP6 allows user-assisted remote attackers to execute arbitrary code via a Visual Basic project (vbp) file containing a long Reference line, related to VBP_Open and OLE.
Published Sep 10, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-4776 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Visual Basic (Microsoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 49% 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 public exploit code exists for a high-severity flaw.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
49%
Higher than 98.8% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
56/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Description
Buffer overflow in Microsoft Visual Basic 6.0 and Enterprise Edition 6.0 SP6 allows user-assisted remote attackers to execute arbitrary code via a Visual Basic project (vbp) file containing a long Reference line, related to VBP_Open and OLE. NOTE: there are limited usage scenarios under which this would be a vulnerability.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Visual BasicMicrosoft | 6.0, 6.0-sp6 | n/a |
Timeline
Publicly disclosed
Sep 10, 2007
Last updated
Apr 22, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- exploitMSF ms_visual_basic_vbp.rb
- exploitExploitDB-16680
- other26704
- other4361
- other4431
FAQ
Common Questions.
Buffer overflow in Microsoft Visual Basic 6.0 and Enterprise Edition 6.0 SP6 allows user-assisted remote attackers to execute arbitrary code via a Visual Basic project (vbp) file containing a long Reference line, related to VBP_Open and OLE.
Affected: Visual Basic (Microsoft) versions 6.0, 6.0-sp6. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
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 public exploit code exists for a high-severity flaw.
Is CVE-2007-4776 On Your Attack Surface?
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