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Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 do not properly initialize data structures for the nsDOMSVGZoomEvent::mPreviousScale and nsDOMSVGZoomEvent::mNewScale functions, which allows remote attackers to obtain sensitive information from process memory via a crafted web site.
Use CWE-665, Mozilla vendor hub and Firefox product page to widen CVE-2013-1675 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2026-6776, CVE-2026-6784 and CVE-2026-6782 for nearby disclosures in the same product family.