How severe is CVE-2012-0446?

CVE-2012-0446 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-0446 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0446?

CVE-2012-0446 primarily affects Mozilla Firefox. In total, 126 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-0446?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-0446 published?

CVE-2012-0446 was published on 2012-02-01 and last updated on 2026-06-16.

CVE-2012-0446

CVE-2012-0446 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mozilla Firefox
Published: 2012-02-01
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in Mozilla Firefox 4.x through 9.0, Thunderbird 5.0 through 9.0, and SeaMonkey before 2.7 allow remote attackers to inject arbitrary web script or HTML via a (1) web page or (2) Firefox extension, related to improper enforcement of XPConnect security restrictions for frame scripts that call untrusted objects.

Frequently asked questions

What is CVE-2012-0446?: Multiple cross-site scripting (XSS) vulnerabilities in Mozilla Firefox 4.x through 9.0, Thunderbird 5.0 through 9.0, and SeaMonkey before 2.7 allow remote attackers to inject arbitrary web script or HTML via a (1) web page or (2) Firefox extension, related to improper enforcement of XPConnect security restrictions for frame scripts that call untrusted objects.
How severe is CVE-2012-0446?: CVE-2012-0446 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-0446 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0446?: CVE-2012-0446 primarily affects Mozilla Firefox. In total, 126 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-0446?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-0446 published?: CVE-2012-0446 was published on 2012-02-01 and last updated on 2026-06-16.

References

Affected products (126)

cpe:2.3:a:mozilla:firefox:4.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta1:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta10:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta11:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta12:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta2:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta3:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta4:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta5:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta6:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta7:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta8:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta9:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:5.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:7.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:8.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:8.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:9.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:5.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:7.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:8.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:9.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:*:beta5:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0:alpha:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0:beta:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.7:*:*:*:*:*:*:*

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