CVE-2022-26486criticalunder attackCWE-416

CVE-2022-26486: critical vulnerability in Mozilla Firefox

Published · Updated

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58Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 9.6epss 2.4%
from disclosure to weapon
Published on NVDDec 22
CISA KEVMar 7
What the vendors declare (VEX)

Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.

Affected
2 products (8 components)
Red Hat Enterprise Linux 6 · Red Hat Enterprise Linux 8
no_fix_planned: Out of support scope
Fixed
10 products (118 components)
Red Hat Enterprise Linux AppStream (v. 8) · Red Hat Enterprise Linux AppStream EUS (v.8.4) · Red Hat Enterprise Linux AppStream EUS (v. 8.2) · Red Hat Enterprise Linux AppStream E4S (v. 8.1) · Red Hat Enterprise Linux Server (v. 7) · and others 5
Not affected
1 product (5 components) — because the vulnerable code is not present in the product
Red Hat Enterprise Linux 9
Action required by CISAfederal deadline: 2022-03-21

Apply updates per vendor instructions.

In short

A flaw in Firefox's graphics processing framework allows attackers to exploit freed memory, potentially breaking out of the browser's security sandbox. This critical vulnerability has been actively exploited in real-world attacks.

Technical detail

A malformed WebGPU IPC message triggers a use-after-free condition in the inter-process communication framework, allowing an attacker with local or network access to execute arbitrary code and escape the sandbox. The vulnerability affects multiple Firefox products without user interaction beyond visiting a malicious page.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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