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prionPRIOn knowledge basePRION:CVE-2021-23954
HistoryFeb 26, 2021 - 3:15 a.m.

Type confusion

2021-02-2603:15:00
PRIOn knowledge base
www.prio-n.com
6

8.2 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

69.6%

Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CPENameOperatorVersion
firefoxlt85.0
firefox_esrlt78.7
thunderbirdlt78.7