Threats / Mozilla / CVE-2022-26486
CVE-2022-26486
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Mozilla Firefox vulnerability
Mozilla Firefox contains a use-after-free vulnerability in the WebGPU IPC Framework that enables arbitrary code execution.
Verdict
Today item — known-exploited.
A use-after-free flaw in Firefox's WebGPU IPC implementation allows attackers to execute arbitrary code through memory corruption. The vulnerability has been observed in active exploitation.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
3 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-07).
Probability (EPSS)
EPSS 0.02349 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Mozilla, Firefox. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-416 Use After Free — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious webpage that triggers improper memory handling in the WebGPU IPC Framework.
Business
User browsing untrusted content faces direct code execution risk on their system.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I exploit the use-after-free condition to corrupt memory and gain control of program execution flow.
Business
Attacker achieves arbitrary code execution with the privileges of the Firefox process.
3
Lateral reach — past segmentation narrative 3
Attacker
I establish persistence or lateral movement from the compromised browser process.
Business
Enterprise endpoints and consumer systems become entry points for further compromise or data theft.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05