CVE-2022-42856

HIGHNVD 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
8.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 9%CVSS: 8.8Exploit: NoneExposed: 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
94.5%
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
ubuntulibwebkit2gtk-4.0-dev (2.38.3-0ubuntu0.20.04.1) @ focal2026-07-22ubuntu
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 95× in last 7d / 396× 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 719 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2022-42856?
CVE-2022-42856 is a high 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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