CVE-2022-26486

CRITICALNVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score elevated to 9.6 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-07), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.6 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.6EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 2%CVSS: 9.6Exploit: cisa kev · ssvc activeExposed: 0

A fix is available — apply it.

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 v3
9.6
EG Score
9.6(high)
EG Risk
83(Attend)
EG Risk 83/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity96% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
2%
EPSS %ILE
83%
KEV
⚠ Exploited

Published

December 22, 2022

Last Modified

August 19, 2026

Advisory Details (3)

Auto-updated Sep 14, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26486
generic🔴 Active Exploitation

Security Vulnerabilities fixed in Firefox 97.0.2, Firefox ESR 91.6.1, Firefox for Android 97.3.0, and Focus 97.3.0 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2022-09/
generic🔴 Active Exploitation

1758070 - (CVE-2022-26486) UAF in Webgpu status manager [exploited in the wild]

https://bugzilla.mozilla.org/show_bug.cgi?id=1758070

Vendor Advisories for CVE-2022-26486(10)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntufirefox-locale-ast (97.0.2+build1-0ubuntu0.21.10.1) @ impish2026-09-19ubuntu
redhatthunderbird-0:91.7.0-2.el8_22022-03-14redhat
redhatthunderbird-0:91.7.0-2.el7_92022-03-14redhat
redhatthunderbird-0:91.7.0-2.el8_42022-03-14redhat
redhatthunderbird-0:91.7.0-2.el8_52022-03-14redhat
redhatthunderbird-0:91.7.0-2.el8_12022-03-14redhat
redhatfirefox-0:91.7.0-3.el8_12022-03-10redhat
redhatfirefox-0:91.7.0-3.el8_22022-03-10redhat
redhatfirefox-0:91.7.0-3.el7_92022-03-10redhat
redhatfirefox-0:91.7.0-3.el8_42022-03-10redhat
redhatfirefox-0:91.7.0-3.el8_52022-03-10redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(12 across 6 ecosystems)
Debian:10(2)
PackageVulnerable rangeFixed inDependents
firefox-esr60.7.2esr-1 ... 91.6.1esr-1~deb9u1 (134 versions)91.6.1esr-1~deb10u1—
thunderbird1:60.7.2-1 ... 1:91.6.2-1~deb9u1 (170 versions)1:91.6.2-1~deb10u1—
Debian:11(2)
PackageVulnerable rangeFixed inDependents
firefox-esr78.12.0esr-1 ... 91.6.1esr-1~deb9u1 (32 versions)91.6.1esr-1~deb11u1—
thunderbird1:78.12.0-1 ... 1:91.6.2-1~deb9u1 (47 versions)1:91.6.2-1~deb11u1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—91.6.1esr-1—
thunderbird—1:91.6.2-1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—91.6.1esr-1—
thunderbird—1:91.6.2-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—91.6.1esr-1—
thunderbird—1:91.6.2-1—
Debian:9(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.9.0esr-1 ... 91.6.0esr-1~deb9u1 (241 versions)91.6.1esr-1~deb9u1—
thunderbird1.5-4 ... 1:91.6.1-1~deb9u1 (251 versions)1:91.6.2-1~deb9u1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 94× in last 7d / 405× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,465 total refreshes for this CVE.

  1. 2026-09-19 05:30 UTCVendor advisory
  2. 2026-09-19 05:30 UTCGHSA enrichment
  3. 2026-09-19 01:11 UTCVendor advisory
  4. 2026-09-19 01:11 UTCGHSA enrichment
  5. 2026-09-18 20:52 UTCEG score recompute
  6. 2026-09-18 20:52 UTCVendor advisory
  7. 2026-09-18 20:51 UTCGHSA enrichment
  8. 2026-09-18 19:20 UTCCISA KEV update
  9. 2026-09-18 16:33 UTCVendor advisory
  10. 2026-09-18 16:33 UTCGHSA enrichment
  11. 2026-09-18 14:15 UTCCISA KEV update
  12. 2026-09-18 12:15 UTCVendor advisory
  13. 2026-09-18 12:15 UTCGHSA enrichment
  14. 2026-09-18 07:56 UTCVendor advisory
  15. 2026-09-18 07:56 UTCGHSA enrichment
  16. 2026-09-18 03:38 UTCVendor advisory
  17. 2026-09-18 03:38 UTCGHSA enrichment
  18. 2026-09-17 23:19 UTCEG score recompute
  19. 2026-09-17 23:19 UTCVendor advisory
  20. 2026-09-17 23:19 UTCGHSA enrichment
  21. 2026-09-17 19:23 UTCEPSS rescore
  22. 2026-09-17 19:00 UTCVendor advisory
  23. 2026-09-17 19:00 UTCGHSA enrichment
  24. 2026-09-17 14:39 UTCVendor advisory
  25. 2026-09-17 14:39 UTCGHSA enrichment
Show 75 more
  1. 2026-09-17 10:20 UTCVendor advisory
  2. 2026-09-17 10:20 UTCGHSA enrichment
  3. 2026-09-17 06:01 UTCVendor advisory
  4. 2026-09-17 06:01 UTCGHSA enrichment
  5. 2026-09-17 01:42 UTCVendor advisory
  6. 2026-09-17 01:42 UTCGHSA enrichment
  7. 2026-09-16 21:24 UTCVendor advisory
  8. 2026-09-16 21:24 UTCGHSA enrichment
  9. 2026-09-16 17:05 UTCEG score recompute
  10. 2026-09-16 17:05 UTCVendor advisory
  11. 2026-09-16 17:05 UTCGHSA enrichment
  12. 2026-09-16 14:10 UTCCISA KEV update
  13. 2026-09-16 14:05 UTCEPSS rescore
  14. 2026-09-16 12:47 UTCVendor advisory
  15. 2026-09-16 12:47 UTCGHSA enrichment
  16. 2026-09-16 08:29 UTCEG score recompute
  17. 2026-09-16 08:29 UTCVendor advisory
  18. 2026-09-16 08:28 UTCGHSA enrichment
  19. 2026-09-16 04:08 UTCVendor advisory
  20. 2026-09-16 04:08 UTCGHSA enrichment
  21. 2026-09-15 23:48 UTCVendor advisory
  22. 2026-09-15 23:47 UTCGHSA enrichment
  23. 2026-09-15 19:29 UTCVendor advisory
  24. 2026-09-15 19:29 UTCGHSA enrichment
  25. 2026-09-15 15:10 UTCVendor advisory
  26. 2026-09-15 15:10 UTCGHSA enrichment
  27. 2026-09-15 10:52 UTCVendor advisory
  28. 2026-09-15 10:51 UTCGHSA enrichment
  29. 2026-09-15 06:31 UTCEG score recompute
  30. 2026-09-15 06:31 UTCVendor advisory
  31. 2026-09-15 06:31 UTCGHSA enrichment
  32. 2026-09-15 03:06 UTCEPSS rescore
  33. 2026-09-15 02:13 UTCVendor advisory
  34. 2026-09-15 02:13 UTCGHSA enrichment
  35. 2026-09-14 21:55 UTCVendor advisory
  36. 2026-09-14 21:54 UTCGHSA enrichment
  37. 2026-09-14 19:24 UTCCISA KEV update
  38. 2026-09-14 17:36 UTCVendor advisory
  39. 2026-09-14 17:36 UTCGHSA enrichment
  40. 2026-09-14 13:18 UTCVendor advisory
  41. 2026-09-14 13:18 UTCGHSA enrichment
  42. 2026-09-14 09:00 UTCVendor advisory
  43. 2026-09-14 09:00 UTCGHSA enrichment
  44. 2026-09-14 04:42 UTCVendor advisory
  45. 2026-09-14 04:42 UTCGHSA enrichment
  46. 2026-09-14 00:24 UTCVendor advisory
  47. 2026-09-14 00:24 UTCGHSA enrichment
  48. 2026-09-13 20:06 UTCEG score recompute
  49. 2026-09-13 20:06 UTCVendor advisory
  50. 2026-09-13 20:06 UTCGHSA enrichment
  51. 2026-09-13 16:43 UTCEPSS rescore
  52. 2026-09-13 15:48 UTCVendor advisory
  53. 2026-09-13 15:48 UTCGHSA enrichment
  54. 2026-09-13 11:30 UTCVendor advisory
  55. 2026-09-13 11:30 UTCGHSA enrichment
  56. 2026-09-13 07:12 UTCVendor advisory
  57. 2026-09-13 07:11 UTCGHSA enrichment
  58. 2026-09-13 02:54 UTCVendor advisory
  59. 2026-09-13 02:53 UTCGHSA enrichment
  60. 2026-09-12 22:35 UTCVendor advisory
  61. 2026-09-12 22:35 UTCGHSA enrichment
  62. 2026-09-12 18:17 UTCEG score recompute
  63. 2026-09-12 18:17 UTCVendor advisory
  64. 2026-09-12 18:17 UTCGHSA enrichment
  65. 2026-09-12 14:57 UTCEPSS rescore
  66. 2026-09-12 13:59 UTCVendor advisory
  67. 2026-09-12 13:59 UTCGHSA enrichment
  68. 2026-09-12 09:41 UTCVendor advisory
  69. 2026-09-12 09:41 UTCGHSA enrichment
  70. 2026-09-12 05:22 UTCVendor advisory
  71. 2026-09-12 05:22 UTCGHSA enrichment
  72. 2026-09-12 01:04 UTCVendor advisory
  73. 2026-09-12 01:04 UTCGHSA enrichment
  74. 2026-09-11 20:46 UTCVendor advisory
  75. 2026-09-11 20:46 UTCGHSA enrichment

Frequently asked(6)

What is CVE-2022-26486?
CVE-2022-26486 is a critical vulnerability published on December 22, 2022. 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…
When was CVE-2022-26486 disclosed?
CVE-2022-26486 was first published in the National Vulnerability Database on December 22, 2022, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-26486 actively exploited?
Yes. CISA added CVE-2022-26486 to the Known Exploited Vulnerabilities catalog on March 7, 2022, affecting Mozilla Firefox. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2022-26486?
CVE-2022-26486 has a CVSS v3 base score of 9.6 (NVD).
Which products are affected by CVE-2022-26486?
CVE-2022-26486 affects Mozilla Firefox. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2022-26486?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-26486, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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