Is CVE-2009-1043 in the CISA KEV catalog?

No. CVE-2009-1043 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-1043?

CVE-2009-1043 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2009-1043?

CVE-2009-1043 has an EPSS score of 30.57% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2009-1043

HIGHEPSS 98th pctl

10.0

CVSS v2

NVD

Description

Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to execute arbitrary code via unknown vectors triggered by clicking on a link, as demonstrated by Nils during a PWN2OWN competition at CanSecWest 2009.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

30.57%probability of exploitation in 30 days

98thpercentile

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

References

http://blogs.zdnet.com/security/?p=2934
http://cansecwest.com/index.html
http://dvlabs.tippingpoint.com/blog/2009/02/25/pwn2own-2009
http://dvlabs.tippingpoint.com/blog/2009/03/18/pwn2own-2009-day-1---safari-internet-explorer-and-firefox-taken-down-by-four-zero-day-exploits
http://dvlabs.tippingpoint.com/blog/2009/03/20/pwn2own-day-2
http://news.cnet.com/8301-1009_3-10199652-83.html
http://osvdb.org/52892
http://www.h-online.com/security/Pwn2Own-2009-Safari-IE-8-and-Firefox-exploited--/news/112889
http://www.securityfocus.com/bid/34182
http://www.securitytracker.com/id?1021880
https://exchange.xforce.ibmcloud.com/vulnerabilities/49389

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.