CVE-2003-0347

CVE-2003-0347 is a critical-severity vulnerability in Microsoft Office with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 52% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Heap-based buffer overflow in VBE.DLL and VBE6.DLL of Microsoft Visual Basic for Applications (VBA) SDK 5.0 through 6.3 allows remote attackers to execute arbitrary code via a document with a long ID parameter.

Frequently asked questions

What is CVE-2003-0347?
Heap-based buffer overflow in VBE.DLL and VBE6.DLL of Microsoft Visual Basic for Applications (VBA) SDK 5.0 through 6.3 allows remote attackers to execute arbitrary code via a document with a long ID parameter.
How severe is CVE-2003-0347?
CVE-2003-0347 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2003-0347 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 52% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0347?
CVE-2003-0347 primarily affects Microsoft Office. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0347?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2003-0347 published?
CVE-2003-0347 was published on 2003-10-20 and last updated on 2026-06-16.

References

Affected products (13)

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