Vulnerability Intelligence Report
Mozilla Firefox Use-After-Free Vulnerability
CVE-2022-26486
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.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
9.6
CRITICAL
Exploitability:2.9
Impact Score:6.1
EPSS Probability:2.35%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗CWE-416 Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Mozilla | Firefox | unspecified < 97.0.2 (affected) |
| Mozilla | Firefox ESR | unspecified < 91.6.1 (affected) |
| Mozilla | Firefox for Android | unspecified < 97.3.0 (affected) |
| Mozilla | Thunderbird | unspecified < 91.6.2 (affected) |
| Mozilla | Focus | unspecified < 97.3.0 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Mozilla Corporation · Vendor · USA |
| Reserved | 2022-03-04T00:00:00 |
| Published | 2022-12-22T00:00:00 |
| Last Updated | 2025-10-21T23:15:29 |
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