CVE-2025-43529

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 2025-12-15), 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 active · public exploitExposed: 0

A fix is available — apply it.

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.

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

December 17, 2025

Last Modified

April 3, 2026

Advisory Details (8)

Auto-updated May 19, 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-2025-43529
generic

About the security content of Safari 26.2 - Apple Support

https://support.apple.com/en-us/125892
generic

About the security content of visionOS 26.2 - Apple Support

https://support.apple.com/en-us/125891
generic

About the security content of watchOS 26.2 - Apple Support

https://support.apple.com/en-us/125890
generic

About the security content of tvOS 26.2 - Apple Support

https://support.apple.com/en-us/125889
generic

About the security content of macOS Tahoe 26.2 - Apple Support

https://support.apple.com/en-us/125886
generic

About the security content of iOS 18.7.3 and iPadOS 18.7.3 - Apple Support

https://support.apple.com/en-us/125885
generic

About the security content of iOS 26.2 and iPadOS 26.2 - Apple Support

https://support.apple.com/en-us/125884

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwebkitgtk-webdriver (2.50.4-0ubuntu0.25.10.1) @ questing2026-07-29ubuntu
redhatwebkit2gtk3-0:2.50.4-1.el9_42025-12-24redhat
redhatwebkitgtk4-0:2.50.4-2.el7_92025-12-24redhat
redhatwebkit2gtk3-0:2.50.4-1.el8_62025-12-24redhat
redhatwebkit2gtk3-0:2.50.4-1.el9_22025-12-24redhat
redhatwebkit2gtk3-0:2.50.4-1.el9_62025-12-24redhat
redhatwebkit2gtk3-0:2.50.4-1.el8_42025-12-24redhat
redhatwebkit2gtk3-0:2.50.4-1.el8_82025-12-24redhat
redhatwebkit2gtk3-0:2.50.4-1.el9_02025-12-24redhat
redhatwebkit2gtk3-0:2.50.4-1.el8_22025-12-24redhat
redhatwebkit2gtk3-0:2.50.4-1.el8_102025-12-18redhat
redhatwebkit2gtk3-0:2.50.4-1.el9_72025-12-18redhat

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.

All Vendor Advisories

(12)

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 92× in last 7d / 373× 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 857 total refreshes for this CVE.

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

Publicly available exploits

(6 references)

Working exploit code is in the public domain (6 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCGenericCoding/cve-2025-43529-arbitrary-ref
    First seen Jun 11, 2026

    A demonstration of kernel read write using cve-2025-43529

    Open source ↗
  • GitHub PoCGenericCoding/pois0nSword
    First seen Jun 11, 2026

    A demonstration of read write using cve-2025-43529 on iOS 26.1

    Open source ↗
  • GitHub PoCbjrjk/CVE-2025-43529
    First seen Feb 1, 2026

    Root Cause Analysis for CVE-2025-43529, a UAF vulnerability due to incorrect DFG StoreBarrierInsertionPhase in JavaScriptCore.

    Open source ↗
  • GitHub PoCzeroxjf/WebKit-UAF-ANGLE-OOB-Analysis
    First seen Jan 13, 2026

    Analysis of CVE-2025-43529 (WebKit UAF) + CVE-2025-14174 (ANGLE OOB) exploit chain - iOS Safari

    Open source ↗
  • GitHub PoC0xjohnnydev/WebKit-UAF-ANGLE-OOB-Analysis
    First seen Jan 13, 2026

    Analysis of CVE-2025-43529 (WebKit UAF) + CVE-2025-14174 (ANGLE OOB) exploit chain - iOS Safari

    Open source ↗
  • GitHub PoCjir4vv1t/CVE-2025-43529
    First seen Jan 5, 2026

    exploit for cve-2025-43529

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2025-43529?
CVE-2025-43529 is a critical vulnerability published on December 17, 2025. A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code…
When was CVE-2025-43529 disclosed?
CVE-2025-43529 was first published in the National Vulnerability Database on December 17, 2025, with the most recent update on April 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-43529 actively exploited?
Yes. CISA added CVE-2025-43529 to the Known Exploited Vulnerabilities catalog on December 15, 2025, 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-2025-43529?
CVE-2025-43529 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-2025-43529?
CVE-2025-43529 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-2025-43529?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-43529, 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-2025-43529

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