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cvelistMozillaCVELIST:CVE-2016-5284
HistorySep 22, 2016 - 10:00 p.m.

CVE-2016-5284

2016-09-2222:00:00
mozilla
www.cve.org
10

AI Score

8.1

Confidence

High

EPSS

0.002

Percentile

62.2%

Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 rely on unintended expiration dates for Preloaded Public Key Pinning, which allows man-in-the-middle attackers to spoof add-on updates by leveraging possession of an X.509 server certificate for addons.mozilla.org signed by an arbitrary built-in Certification Authority.