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CVE-2019-11707

Known Exploited (CISA KEV)HIGH

8.8

CVSS Severity Score

EPSS Score96.3720%

EPSS Percentile96.66th

PublishedJul 23, 2019

Last ModifiedOct 27, 2025

Vulnerability Description

A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 60.7.1, Firefox < 67.0.3, and Thunderbird < 60.7.2.

Affected Platforms (CPE)

📦

Mozilla

Firefox

< 60.7.1

📦

Mozilla

Firefox

< 67.0.3

📦

Mozilla

Thunderbird

< 60.7.2

References & Advisories

🔗 https://bugzilla.mozilla.org/show_bug.cgi?id=1544386

🔗 https://security.gentoo.org/glsa/201908-12

🔗 https://www.mozilla.org/security/advisories/mfsa2019-18/

🔗 https://www.mozilla.org/security/advisories/mfsa2019-20/

🔗 https://bugzilla.mozilla.org/show_bug.cgi?id=1544386

🔗 https://security.gentoo.org/glsa/201908-12

🔗 https://www.mozilla.org/security/advisories/mfsa2019-18/

🔗 https://www.mozilla.org/security/advisories/mfsa2019-20/

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