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.
Published 2019-07-23 14:15:15
Updated 2023-01-31 14:15:10
View at NVD,   CVE.org

CVE-2019-11707 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Mozilla Firefox and Thunderbird Type Confusion Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Mozilla Firefox and Thunderbird contain a type confusion vulnerability that can occur when manipulating JavaScript objects due to issues in Array.pop, allowing for an exploitable crash.
Added on 2022-05-23 Action due date 2022-06-13

Exploit prediction scoring system (EPSS) score for CVE-2019-11707

75.17%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 98 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-11707

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
NIST
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.8
5.9
NIST

CWE ids for CVE-2019-11707

References for CVE-2019-11707

Products affected by CVE-2019-11707

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