CVE-2022-42856

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 2022-12-14), 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: 9%CVSS: 8.8Exploit: cisa kev · ssvc activeExposed: 0

A fix is available — apply it.

A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.1..

CVSS v3
8.8
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
9%
EPSS %ILE
94%
KEV
⚠ Exploited

Published

December 15, 2022

Last Modified

October 23, 2025

Advisory Details (10)

Auto-updated Jun 2, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

About the security content of macOS Ventura 13.1 - Apple Support

https://support.apple.com/en-us/HT213532
generic🔴 Active Exploitation

About the security content of iOS 15.7.2 and iPadOS 15.7.2 - Apple Support

https://support.apple.com/en-us/HT213531
generic🔴 Active Exploitation

About the security content of iOS 16.1.2 - Apple Support

https://support.apple.com/en-us/HT213516
generic

WebKitGTK+: Multiple Vulnerabilities (GLSA 202305-32) — Gentoo security

https://security.gentoo.org/glsa/202305-32
generic

oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2022-0011

http://www.openwall.com/lists/oss-security/2022/12/26/1
generic🔴 Active Exploitation

Full Disclosure: APPLE-SA-2022-12-13-9 Safari 16.2

http://seclists.org/fulldisclosure/2022/Dec/28
generic🔴 Active Exploitation

Full Disclosure: APPLE-SA-2022-12-13-7 tvOS 16.2

http://seclists.org/fulldisclosure/2022/Dec/26
generic🔴 Active Exploitation

Full Disclosure: APPLE-SA-2022-12-13-4 macOS Ventura 13.1

http://seclists.org/fulldisclosure/2022/Dec/23
generic🔴 Active Exploitation

Full Disclosure: APPLE-SA-2022-12-13-3 iOS 16.1.2

http://seclists.org/fulldisclosure/2022/Dec/22
generic🔴 Active Exploitation

Full Disclosure: APPLE-SA-2022-12-13-2 iOS 15.7.2 and iPadOS 15.7.2

http://seclists.org/fulldisclosure/2022/Dec/21

Vendor Advisories for CVE-2022-42856(1)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibjavascriptcoregtk-5.0-dev (2.38.3-0ubuntu0.22.10.1) @ kinetic2026-07-27ubuntu
redhatwebkitgtk4-0:2.48.3-2.el7_92025-07-07redhat
redhatwebkit2gtk3-0:2.36.7-1.el8_7.12023-01-04redhat
redhatwebkit2gtk3-0:2.36.7-1.el9_1.12023-01-04redhat

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.

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

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 62× in last 7d / 362× 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 740 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2022-42856?
CVE-2022-42856 is a critical vulnerability published on December 15, 2022. A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue…
When was CVE-2022-42856 disclosed?
CVE-2022-42856 was first published in the National Vulnerability Database on December 15, 2022, with the most recent update on October 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-42856 actively exploited?
Yes. CISA added CVE-2022-42856 to the Known Exploited Vulnerabilities catalog on December 14, 2022, affecting Apple iOS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2022-42856?
CVE-2022-42856 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-2022-42856?
CVE-2022-42856 affects Apple iOS. 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-2022-42856?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-42856, 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

Explore the affected products and dependency analysis for CVE-2022-42856

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