CVE-2023-28206

CRITICALNVD 8.69.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-04-10), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.6 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Trending — 3 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: 25%CVSS: 8.6Exploit: 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.

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Monterey 12.6.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1, iOS 15.7.5 and iPadOS 15.7.5, macOS Big Sur 11.7.6. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

CVSS v3
8.6
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
25%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

April 10, 2023

Last Modified

October 23, 2025

Advisory Details (5)

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

About the security content of macOS Big Sur 11.7.6 - Apple Support

https://support.apple.com/en-us/HT213725
generic🔴 Active Exploitation

About the security content of macOS Monterey 12.6.5 - Apple Support

https://support.apple.com/en-us/HT213724
generic🔴 Active Exploitation

About the security content of iOS 15.7.5 and iPadOS 15.7.5 - Apple Support

https://support.apple.com/en-us/HT213723
generic🔴 Active Exploitation

About the security content of macOS Ventura 13.3.1 - Apple Support

https://support.apple.com/en-us/HT213721
generic🔴 Active Exploitation

About the security content of iOS 16.4.1 and iPadOS 16.4.1 - Apple Support

https://support.apple.com/en-us/HT213720

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 65× 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 235 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCacceleratortroll/acceleratortroll
    First seen May 15, 2023

    Abusing CVE-2023-28206 to make something useful

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2023-28206?
CVE-2023-28206 is a critical vulnerability published on April 10, 2023. An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Monterey 12.6.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1, iOS 15.7.5 and iPadOS 15.7.5, macOS Big Sur 11.7.6. An app may be able to execute arbitrary code with kernel privileges. Apple…
When was CVE-2023-28206 disclosed?
CVE-2023-28206 was first published in the National Vulnerability Database on April 10, 2023, 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-2023-28206 actively exploited?
Yes. CISA added CVE-2023-28206 to the Known Exploited Vulnerabilities catalog on April 10, 2023, affecting Apple iOS, iPadOS, and macOS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-28206?
CVE-2023-28206 has a CVSS v3 base score of 8.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-28206?
CVE-2023-28206 affects Apple iOS, iPadOS, and macOS. 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-2023-28206?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-28206, 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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