HIGH

CVE-2020-26950

CVSS v3

8.8

HIGH

EPSS Score

46.9%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

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.

Technical details

Published
12/9/2020

Frequently asked questions

What is CVE-2020-26950?

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.

Is CVE-2020-26950 actively exploited?

Active exploitation of CVE-2020-26950 has not been confirmed. The EPSS score is 46.9%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-26950?

CVE-2020-26950 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2020-26950 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.