CVE-2007-3826

CVE-2007-3826 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 29% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Microsoft Internet Explorer 7 on Windows XP SP2 allows remote attackers to prevent users from leaving a site, spoof the address bar, and conduct phishing and other attacks via repeated document.open function calls after a user requests a new page, but before the onBeforeUnload function is called.

Frequently asked questions

What is CVE-2007-3826?
Microsoft Internet Explorer 7 on Windows XP SP2 allows remote attackers to prevent users from leaving a site, spoof the address bar, and conduct phishing and other attacks via repeated document.open function calls after a user requests a new page, but before the onBeforeUnload function is called.
How severe is CVE-2007-3826?
CVE-2007-3826 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-3826 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3826?
CVE-2007-3826 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3826?
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-2007-3826 published?
CVE-2007-3826 was published on 2007-07-17 and last updated on 2026-06-16.

References

Affected products (1)

More vulnerabilities in Microsoft Internet Explorer

All CVEs affecting Microsoft Internet Explorer →