CVE-2020-26952

HIGH
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Incorrect bookkeeping of functions inlined during JIT compilation could have led to memory corruption and a potentially exploitable crash when handling out-of-memory errors. This vulnerability affects Firefox < 83.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1667685

https://www.mozilla.org/security/advisories/mfsa2020-50/

Details

Source: MITRE

Published: 2020-12-09

Updated: 2020-12-09

Type: CWE-787

Risk Information

CVSS v2

Base Score: 9.3

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 8.6

Severity: HIGH

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Tenable Plugins

View all (4 total)

IDNameProductFamilySeverity
143127Ubuntu 16.04 LTS : Firefox vulnerabilities (USN-4637-2)NessusUbuntu Local Security Checks
high
143121Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : Firefox vulnerabilities (USN-4637-1)NessusUbuntu Local Security Checks
high
142911Mozilla Firefox < 83.0NessusMacOS X Local Security Checks
high
142910Mozilla Firefox < 83.0NessusWindows
high