CVE-2007-5338

CVE-2007-5338 is a critical-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-16.

Key facts

Description

Mozilla Firefox before 2.0.0.8 and SeaMonkey before 1.1.5 allow remote attackers to execute arbitrary Javascript with user privileges by using the Script object to modify XPCNativeWrappers in a way that causes the script to be executed when a chrome action is performed.

Frequently asked questions

What is CVE-2007-5338?
Mozilla Firefox before 2.0.0.8 and SeaMonkey before 1.1.5 allow remote attackers to execute arbitrary Javascript with user privileges by using the Script object to modify XPCNativeWrappers in a way that causes the script to be executed when a chrome action is performed.
How severe is CVE-2007-5338?
CVE-2007-5338 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-5338 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-5338?
CVE-2007-5338 primarily affects Mozilla Firefox. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-5338?
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-2007-5338 published?
CVE-2007-5338 was published on 2007-10-21 and last updated on 2026-06-16.

References

Affected products (2)

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