CVE-2022-4262

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-12-05), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 16%CVSS: 8.8Exploit: cisa kev · ssvc active · epss top5pct · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Type confusion in V8 in Google Chrome prior to 108.0.5359.94 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

CVSS v3
8.8
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: 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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
16%
EPSS %ILE
97%
KEV
⚠ Exploited

Published

December 2, 2022

Last Modified

October 24, 2025

Advisory Details (3)

Auto-updated Jun 2, 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-2022-4262
generic
https://crbug.com/1394403
generic🔴 Active Exploitation

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2022/12/stable-channel-update-for-desktop.html

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
chromium100.0.4896.127-1 ... 99.0.4844.84-1~deb11u1 (73 versions)108.0.5359.94-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
chromium—108.0.5359.94-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chromium—108.0.5359.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chromium—108.0.5359.94-1—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 97× in last 7d / 400× 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 1,446 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCmistymntncop/CVE-2022-4262
    First seen Jan 24, 2024
    Open source ↗
  • GitHub PoCbjrjk/CVE-2022-4262
    First seen Jul 13, 2023

    Full Chain Analysis of CVE-2022-4262, a non-trivial feedback slot type confusion in V8.

    Open source ↗

Frequently asked(6)

What is CVE-2022-4262?
CVE-2022-4262 is a critical vulnerability published on December 2, 2022. Type confusion in V8 in Google Chrome prior to 108.0.5359.94 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
When was CVE-2022-4262 disclosed?
CVE-2022-4262 was first published in the National Vulnerability Database on December 2, 2022, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-4262 actively exploited?
Yes. CISA added CVE-2022-4262 to the Known Exploited Vulnerabilities catalog on December 5, 2022, affecting Google Chromium V8. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2022-4262?
CVE-2022-4262 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2022-4262?
CVE-2022-4262 affects Google Chromium V8. 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-2022-4262?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-4262, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-4262

Explore →

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