CVE-2026-43790

CRITICALNVD 9.19.1
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-14. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 9.1Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

The issue was addressed with improved memory handling. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

CVSS v3
9.1
EG Score
9.1CRITICALhigh confidence
EG Risk
56
EG Risk 56/100

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 (value × EchelonGraph’s weight)
Severity91% × 45%
The EG Score, 9.1 of 10.
Exploitation0.7% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
52nd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 14, 2026

Last Modified

September 17, 2026

Advisory Details (3)

Auto-updated Sep 16, 2026
Fix named in the CVE record.
Web page

About the security content of macOS Sequoia 15.8 - Apple Support

https://support.apple.com/en-us/149043
Web page

About the security content of macOS Tahoe 26.7 - Apple Support

https://support.apple.com/en-us/149042
Web page

About the security content of macOS Golden Gate 27 - Apple Support

https://support.apple.com/en-us/149035

Vendor Advisories for CVE-2026-43790(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 42× in last 7d / 213× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 213 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 113 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 02:10 UTCEG score recompute
  2. 2026-10-14 02:10 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  4. 2026-10-12 22:31 UTCEG score recompute
  5. 2026-10-12 22:30 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  6. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  7. 2026-10-12 16:05 UTCEG score recompute
  8. 2026-10-11 23:28 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  9. 2026-10-11 19:40 UTCEG score recompute
  10. 2026-10-11 19:40 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  11. 2026-10-11 17:02 UTCEG score recompute
  12. 2026-10-11 14:16 UTCEG score recompute
  13. 2026-10-11 14:16 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  14. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  15. 2026-10-11 09:45 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  16. 2026-10-11 05:57 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-10-10 23:24 UTCEG score recompute
  18. 2026-10-10 23:24 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  19. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  20. 2026-10-10 19:38 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  21. 2026-10-10 15:22 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  22. 2026-10-10 11:33 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  23. 2026-10-10 07:46 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  24. 2026-10-10 03:27 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  25. 2026-10-09 23:41 UTCEG score recompute
Show 75 more
  1. 2026-10-09 23:40 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  2. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  3. 2026-10-09 19:52 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  4. 2026-10-09 16:05 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  5. 2026-10-09 06:24 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  6. 2026-10-09 02:36 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  7. 2026-10-08 22:49 UTCEG score recompute
  8. 2026-10-08 22:49 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  9. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  10. 2026-10-08 10:15 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  11. 2026-10-08 06:28 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  12. 2026-10-08 02:40 UTCEG score recompute
  13. 2026-10-08 02:39 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  15. 2026-10-07 22:53 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  16. 2026-10-07 19:06 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-10-07 12:54 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  18. 2026-10-07 08:57 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  19. 2026-10-07 05:10 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  20. 2026-10-07 01:23 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  21. 2026-10-06 21:36 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  22. 2026-10-06 17:50 UTCEG score recompute
  23. 2026-10-06 17:50 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  24. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  25. 2026-10-06 14:03 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  26. 2026-10-06 10:16 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  27. 2026-10-06 06:17 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  28. 2026-10-06 02:19 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  29. 2026-10-05 22:27 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  30. 2026-10-05 18:33 UTCEG score recompute
  31. 2026-10-05 18:33 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  32. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  33. 2026-10-05 14:47 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  34. 2026-10-05 11:00 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  35. 2026-10-05 06:59 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  36. 2026-10-05 03:12 UTCEG score recompute
  37. 2026-10-05 03:12 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  38. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  39. 2026-10-04 23:17 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  40. 2026-10-04 19:30 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  41. 2026-10-04 15:43 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  42. 2026-10-04 11:56 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  43. 2026-10-04 08:10 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  44. 2026-10-04 04:23 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  45. 2026-10-04 00:36 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  46. 2026-10-03 20:50 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  47. 2026-10-03 17:03 UTCEG score recompute
  48. 2026-10-03 17:03 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  49. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  50. 2026-10-03 13:16 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  51. 2026-10-03 09:29 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  52. 2026-10-03 04:21 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  53. 2026-10-03 00:34 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  54. 2026-10-02 20:47 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  55. 2026-10-02 16:42 UTCEG score recompute
  56. 2026-10-02 16:42 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  57. 2026-10-02 12:52 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  58. 2026-10-02 09:06 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  59. 2026-10-02 05:05 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  60. 2026-10-02 00:17 UTCEG score recompute
  61. 2026-10-02 00:17 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  62. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  63. 2026-10-01 19:39 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  64. 2026-10-01 15:53 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  65. 2026-10-01 12:06 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  66. 2026-10-01 08:19 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  67. 2026-10-01 04:31 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  68. 2026-10-01 00:45 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  69. 2026-09-30 20:58 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  70. 2026-09-30 17:12 UTCEG score recompute
  71. 2026-09-30 17:12 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  72. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  73. 2026-09-30 12:50 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  74. 2026-09-30 08:59 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1
  75. 2026-09-30 05:13 UTCGHSA enrichmentGHSA-75g4-wpm7-g7gh · GitHub severity CRITICAL · GitHub CVSS 9.1

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43790?
CVE-2026-43790 is a critical-severity vulnerability; its CVE record was published on September 14, 2026. The issue was addressed with improved memory handling. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.
When was the CVE record for CVE-2026-43790 published?
The CVE record for CVE-2026-43790 was published on September 14, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 17, 2026; the record at its source may have been updated since.
Is CVE-2026-43790 actively exploited?
CVE-2026-43790 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43790?
CVE-2026-43790 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-43790?
The CVE record for CVE-2026-43790 names the fix: "This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7." The vendor advisories EchelonGraph has for CVE-2026-43790 are linked in the Vendor Advisories panel on this page.

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