CVE-2022-26486: Mozilla Firefox Use-After-Free Vulnerability

Description

An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

High

Integrity

High

Availability

High

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)2.4% · higher than 84% of CVEs

Exploited in the wildYes

CISA KEVListed Mar 7, 2022

Federal remediation dueMar 21, 2022

Ransomware campaign useNot known

Affected products

Which versions

FI

Firefox · Mozilla

before 97.0.2 · source: vendor, NVD, KEV

FE

Firefox ESR · Mozilla

before 91.6.1 · source: vendor

FF

Firefox for Android · Mozilla

before 97.3.0 · source: vendor

FO

Focus · Mozilla

before 97.3.0 · source: vendor

TH

Thunderbird · Mozilla

before 91.6.2 · source: vendor, NVD

FF

Firefox Focus · Mozilla

before 97.3.0 · source: NVD

FM

Firefox Mobile · Mozilla

before 97.3.0 · source: NVD