CVE-2008-3473

Microsoft Internet Explorer 6 and 7 does not properly determine the domain or security zone of origin of web script, which allows remote attackers to bypass the intended cross-domain security policy, and execute arbitrary code or obtain sensitive information, via a crafted HTML document, aka "Event Handling Cross-Domain Vulnerability."

Published: 2008-10-15 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-3473 is rated High Risk (76.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 47.03%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +5.09% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-3473

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-28 41.94% 47.03% +5.09%
2 2025-12-27 47.03% 41.94% -5.09%
3 2025-10-28 — 47.03% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-3473

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2008-3473

Affected software / configurations for CVE-2008-3473

Vendor Product Version Raw CPE
microsoft internet_explorer 5.01 cpe:2.3:a:microsoft:internet_explorer:5.01:sp4:*:*:*:*:*:*
microsoft internet_explorer 6 cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:*
microsoft internet_explorer 6 cpe:2.3:a:microsoft:internet_explorer:6:sp1:*:*:*:*:*:*
microsoft internet_explorer 7 cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:*

References for CVE-2008-3473

cvelogic Threat Intelligence