CVE-2019-11707

Mozilla: Type confusion in Array.pop

Published Jul 23, 2019 CVSS 3.1 · 8.8 High EPSS 38.0% KEV · Listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-1829-1 firefox-esr security update
Debian DLA Debian DLA DLA-1836-1 thunderbird security update
Debian DSA Debian DSA DSA-4466-1 firefox-esr security update
Debian DSA Debian DSA DSA-4471-1 thunderbird security update
Ubuntu USN Ubuntu USN USN-4020-1 Firefox vulnerability
Ubuntu USN Ubuntu USN USN-4045-1 Thunderbird vulnerabilities
History
Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
Type Values Removed Values Added
Metrics epss

{'score': 0.84214}

epss

{'score': 0.81786}

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Vendors & Products Mozilla firefox Esr
Type Values Removed Values Added
Metrics kev

{'dateAdded': '2022-05-23'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Oct 21, 2025, 11:45 PM
Reserved
May 3, 2019, 12:00 AM
Status
Analyzed
Published
Jul 23, 2019, 2:15 PM
Modified
Jun 17, 2026, 2:13 AM
Severity
Critical
Public date
Jun 19, 2019, 12:00 AM