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Case File

CVE-2013-0757

HIGH · CVSS 9.3 EPSS 60.86%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2013-01-13 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

CVE
CVE-2013-0757
Severity
HIGH
CVSS
9.3
EPSS
60.86%
Chrome Firefox Java

Original Filing — NVD Description

The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 17.x before 17.0.2, and SeaMonkey before 2.15 does not prevent modifications to the prototype of an object, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges by referencing Object.prototype.__proto__ in a crafted HTML document.