Is CVE-2009-2472 in the CISA KEV catalog?

No. CVE-2009-2472 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-2472?

CVE-2009-2472 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2009-2472?

CVE-2009-2472 has an EPSS score of 2.24% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-2472?

Upgrade DeveloperEdition to 3.0.12 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2009-2472

MEDIUMEPSS 81th pctl

4.3

CVSS v2

NVD

Description

Mozilla Firefox before 3.0.12 does not always use XPCCrossOriginWrapper when required during object construction, which allows remote attackers to bypass the Same Origin Policy and conduct cross-site scripting (XSS) attacks via a crafted document, related to a "cross origin wrapper bypass."

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:3.0.12Fixed in:3.0.12Mozilla

Mozilla Firefox (en-US)Windows application

Affected:3.0.12Fixed in:3.0.12Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.24%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Patch6

Third-Party Advisory9

Other references3

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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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.