CVE-2007-1749

CVE-2007-1749 is a critical-severity vulnerability in Microsoft Internet Explorer with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 42% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Integer underflow in the CDownloadSink class code in the Vector Markup Language (VML) component (VGX.DLL), as used in Internet Explorer 5.01, 6, and 7 allows remote attackers to execute arbitrary code via compressed content with an invalid buffer size, which triggers a heap-based buffer overflow.

Frequently asked questions

What is CVE-2007-1749?
Integer underflow in the CDownloadSink class code in the Vector Markup Language (VML) component (VGX.DLL), as used in Internet Explorer 5.01, 6, and 7 allows remote attackers to execute arbitrary code via compressed content with an invalid buffer size, which triggers a heap-based buffer overflow.
How severe is CVE-2007-1749?
CVE-2007-1749 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-1749 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1749?
CVE-2007-1749 primarily affects Microsoft Internet Explorer. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-1749?
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-2007-1749 published?
CVE-2007-1749 was published on 2007-08-14 and last updated on 2026-06-16.

References

Affected products (3)

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