Is CVE-2009-1528 in the CISA KEV catalog?

No. CVE-2009-1528 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-1528?

CVE-2009-1528 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2009-1528?

CVE-2009-1528 has an EPSS score of 35.26% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2009-1528

HIGHEPSS 98th pctl

9.3

CVSS v2

NVD

Description

Microsoft Internet Explorer 6 and 7 for Windows XP SP2 and SP3; 6 and 7 for Server 2003 SP2; 7 for Vista Gold, SP1, and SP2; and 7 for Server 2008 SP2 does not properly synchronize AJAX requests, which allows allows remote attackers to execute arbitrary code via a large number of concurrent, asynchronous XMLHttpRequest calls, aka "HTML Object Memory Corruption Vulnerability."

CWE-399

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

35.26%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.