CVE-2023-42917

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 2023-12-04), 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 memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.

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
95%
KEV
⚠ Exploited

Published

November 30, 2023

Last Modified

June 17, 2026

Advisory Details (10)

Auto-updated Jun 2, 2026
No patch confirmed yet.
generic

[SECURITY] Fedora 39 Update: webkitgtk-2.42.3-1.fc39 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/P5LQS6VEI7VIZNC7QGQ62EOV45R5RJIR/
generic

[SECURITY] Fedora 38 Update: webkitgtk-2.42.3-1.fc38 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/AD2KIHHCUBQC2YYH3FJWAHI5BG3QETOH/
generic

oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2023-0011

http://www.openwall.com/lists/oss-security/2023/12/05/1
generic

Full Disclosure: APPLE-SA-01-22-2024-4 iOS 15.8.1 and iPadOS 15.8.1

http://seclists.org/fulldisclosure/2024/Jan/35
generic

Full Disclosure: APPLE-SA-12-11-2023-3 iOS 16.7.3 and iPadOS 16.7.3

http://seclists.org/fulldisclosure/2023/Dec/8
generic

Full Disclosure: APPLE-SA-11-30-2023-3 macOS Sonoma 14.1.2

http://seclists.org/fulldisclosure/2023/Dec/5
generic

Full Disclosure: APPLE-SA-11-30-2023-2 iOS 17.1.2 and iPadOS 17.1.2

http://seclists.org/fulldisclosure/2023/Dec/4
generic

Full Disclosure: APPLE-SA-11-30-2023-1 Safari 17.1.2

http://seclists.org/fulldisclosure/2023/Dec/3
generic

Full Disclosure: APPLE-SA-12-11-2023-8 watchOS 10.2

http://seclists.org/fulldisclosure/2023/Dec/13
generic

Full Disclosure: APPLE-SA-12-11-2023-7 tvOS 17.2

http://seclists.org/fulldisclosure/2023/Dec/12

Vendor Advisories for CVE-2023-42917(9)

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

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwebkit2gtk-driver (2.42.3-0ubuntu0.23.10.1) @ mantic2026-07-27ubuntu
redhatwebkitgtk4-0:2.48.3-2.el7_92025-07-07redhat
redhatwebkit2gtk3-0:2.46.3-1.el8_82024-11-14redhat
redhatwebkit2gtk3-0:2.46.3-1.el8_42024-11-14redhat
redhatwebkit2gtk3-0:2.46.3-1.el8_22024-11-14redhat
redhatwebkit2gtk3-0:2.46.3-1.el8_62024-11-14redhat
redhatwebkit2gtk3-0:2.46.1-1.el9_22024-10-28redhat
redhatwebkit2gtk3-0:2.46.1-1.el9_02024-10-28redhat
redhatwebkit2gtk3-0:2.42.5-1.el82024-05-22redhat
redhatwebkit2gtk3-0:2.42.5-1.el92024-04-30redhat
redhatwebkit2gtk3-0:2.40.5-1.el9_3.12023-12-11redhat
redhatwebkit2gtk3-0:2.40.5-1.el8_9.12023-12-11redhat

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 64× in last 7d / 370× 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 749 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2023-42917?
CVE-2023-42917 is a critical vulnerability published on November 30, 2023. A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against…
When was CVE-2023-42917 disclosed?
CVE-2023-42917 was first published in the National Vulnerability Database on November 30, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-42917 actively exploited?
Yes. CISA added CVE-2023-42917 to the Known Exploited Vulnerabilities catalog on December 4, 2023, affecting Apple Multiple Products. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-42917?
CVE-2023-42917 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-2023-42917?
CVE-2023-42917 affects Apple Multiple Products. 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-2023-42917?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-42917, 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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