CVE-2026-43818

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Processing a maliciously crafted image may lead to arbitrary code execution.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

July 27, 2026

Last Modified

August 17, 2026

Advisory Details (4)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic

About the security content of macOS Sonoma 14.8.8 - Apple Support

https://support.apple.com/en-us/128072
generic

About the security content of macOS Sequoia 15.7.8 - Apple Support

https://support.apple.com/en-us/128071
generic

About the security content of macOS Tahoe 26.6 - Apple Support

https://support.apple.com/en-us/128067
generic

About the security content of iOS 26.6 and iPadOS 26.6 - Apple Support

https://support.apple.com/en-us/128066

Vendor Advisories for CVE-2026-43818(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 97× 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 189 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43818?
CVE-2026-43818 is a high vulnerability published on July 27, 2026. An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Processing a maliciously crafted image may lead to arbitrary code execution.
When was CVE-2026-43818 disclosed?
CVE-2026-43818 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43818 actively exploited?
CVE-2026-43818 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 48.9% of all scored CVEs.
What is the CVSS score of CVE-2026-43818?
CVE-2026-43818 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-43818?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43818, 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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