vulnerability
MFSA2020-49 Firefox: Security Vulnerabilities fixed in Firefox 82.0.3, Firefox ESR 78.4.1, and Thunderbird 78.4.2 (CVE-2020-26950)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:N/C:C/I:C/A:C) | Nov 9, 2020 | Nov 10, 2020 | Aug 11, 2025 |
Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
Nov 9, 2020
Added
Nov 10, 2020
Modified
Aug 11, 2025
Description
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.
Solutions
mozilla-firefox-esr-upgrade-78_4_1mozilla-firefox-upgrade-82_0_3
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