CVE-2022-1802

high-risk
Published 2022-12-22

If an attacker was able to corrupt the methods of an Array object in JavaScript via prototype pollution, they could have achieved execution of attacker-controlled JavaScript code in a privileged context. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.

Do I need to act?

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67.9% chance of exploitation in next 30 days
EPSS score — higher than 32% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Mozilla

References (5)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1770137
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-19/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1770137
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-19/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1770137
58
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 19/34 · Moderate
Exposure 9/34 · Low