CVE Details

Release Date:2020-12-09


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.

See more information about CVE-2020-26950 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 8.8 Base Metrics: AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Access Vector: Network Attack Complexity: Low
Privileges Required: None User Interaction: Required
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: High Availability Impact: High

Errata information

PlatformErrataRelease Date
Oracle Linux version 6 (firefox)ELSA-2020-51042020-11-14
Oracle Linux version 6 (thunderbird)ELSA-2020-51642020-11-23
Oracle Linux version 7 (firefox)ELSA-2020-50992020-11-13
Oracle Linux version 7 (thunderbird)ELSA-2020-51632020-11-24
Oracle Linux version 8 (firefox)ELSA-2020-51002020-11-17
Oracle Linux version 8 (thunderbird)ELSA-2020-51462020-11-19

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team