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This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55."}, {"lang": "es", "value": "Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada al leer un observador de imagen durante la reconstrucci\u00f3n de frames una vez se ha liberado el observador. Esto resulta en un cierre inesperado potencialmente explotable. 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