How severe is CVE-2010-2762?

CVE-2010-2762 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2010-2762 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2762?

CVE-2010-2762 primarily affects Mozilla Firefox. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2762?

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

When was CVE-2010-2762 published?

CVE-2010-2762 was published on 2010-09-09 and last updated on 2026-06-16.

CVE-2010-2762

CVE-2010-2762 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 6.8. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Mozilla Firefox
Published: 2010-09-09
Last modified: 2026-06-16

Description

The XPCSafeJSObjectWrapper class in the SafeJSObjectWrapper (aka SJOW) implementation in Mozilla Firefox 3.6.x before 3.6.9 and Thunderbird 3.1.x before 3.1.3 does not properly restrict objects at the end of scope chains, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via vectors related to a chrome privileged object and a chain ending in an outer object.

Frequently asked questions

What is CVE-2010-2762?: The XPCSafeJSObjectWrapper class in the SafeJSObjectWrapper (aka SJOW) implementation in Mozilla Firefox 3.6.x before 3.6.9 and Thunderbird 3.1.x before 3.1.3 does not properly restrict objects at the end of scope chains, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via vectors related to a chrome privileged object and a chain ending in an outer object.
How severe is CVE-2010-2762?: CVE-2010-2762 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2010-2762 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-2762?: CVE-2010-2762 primarily affects Mozilla Firefox. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-2762?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-2762 published?: CVE-2010-2762 was published on 2010-09-09 and last updated on 2026-06-16.

References

Affected products (10)

cpe:2.3:a:mozilla:firefox:3.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:3.6.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:3.6.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:3.6.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:3.6.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:3.6.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:3.6.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:3.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:3.1.2:*:*:*:*:*:*:*

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