Is CVE-2019-11707 actively exploited?

CVE-2019-11707 has no public evidence of in-the-wild exploitation as of 2025-10-27.

What is the CVSS score for CVE-2019-11707?

CVE-2019-11707 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

How do I patch CVE-2019-11707?

Patch guidance is available from mozilla security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2019-11707.

Fix CVE-2019-11707 - HIGH mozilla firefox

Q: Which products are affected by CVE-2019-11707?

3 products: mozilla firefox, mozilla firefox, mozilla thunderbird.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-843 CWE-843

Metadata

Primary Vendor: MOZILLA
Published: 7/23/2019
Last Modified: 10/27/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2019-11707

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary