CVE-2020-26950

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.

Weakness classification

• nvd@nist.gov: CWE-416

Primary references

• security@mozilla.org — Exploit, Third Party Advisory, VDB Entry
• security@mozilla.org — Exploit, Issue Tracking, Vendor Advisory
• security@mozilla.org — Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory, VDB Entry
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory