CASCACascade Atlas

Evidence dossier

CVE-2022-26486

CVE-2022-26486

67.1–82.1Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Dec 22, 2022
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS2.35%

2026-07-18 · v2026.06.15 · percentile 81.8%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
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CISA ADP Vulnrichment

CVEderivative copy
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CVE Program Container

mozillaoriginal assertion
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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 KEVoriginal assertion
observed_exploitation

Mozilla Firefox Use-After-Free Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.023490000000; percentile 0.817880000000

Applicability

Cited product scope

Trace impact →
MozillaFirefox
[{"status": "affected", "version": "unspecified", "lessThan": "97.0.2", "versionType": "custom"}]unknown
MozillaFirefox ESR
[{"status": "affected", "version": "unspecified", "lessThan": "91.6.1", "versionType": "custom"}]unknown
MozillaFirefox for Android
[{"status": "affected", "version": "unspecified", "lessThan": "97.3.0", "versionType": "custom"}]unknown
MozillaFocus
[{"status": "affected", "version": "unspecified", "lessThan": "97.3.0", "versionType": "custom"}]unknown
MozillaThunderbird
[{"status": "affected", "version": "unspecified", "lessThan": "91.6.2", "versionType": "custom"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*; end excluding 97.0.2supported
Unknown vendorUnknown product
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:*; end excluding 97.3.0supported
Unknown vendorUnknown product
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*; end excluding 91.6.1supported
Unknown vendorUnknown product
cpe:2.3:a:mozilla:firefox_focus:*:*:*:*:*:*:*:*; end excluding 97.3.0supported
Unknown vendorUnknown product
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*; end excluding 91.6.2supported

Assessments

CVSS by origin

9.6
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
9.6
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
9.6
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.