Mozilla Releases Security Updates for Firefox, Firefox ESR

The Mozilla Foundation released security updates to address a critical vulnerability in the built-in PDF Viewer for Firefox and Firefox ESR, the U.S. Computer Emergency Readiness Team said in an alert Thursday. U.S.-CERT said that exploiting the vulnerability may allow attackers to read and steal sensitive local files on the victim’s computer. Updates to Firefox are available, and U.S.-CERT recommends users and administrators apply necessary updates.