CVE-2026-43777

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

This issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause a denial of service.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 28, 2026

Advisory Details (3)

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

Vendor Advisories for CVE-2026-43777(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 / 116× 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 137 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43777?
CVE-2026-43777 is a high vulnerability published on July 27, 2026. This issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause a denial of service.
When was CVE-2026-43777 disclosed?
CVE-2026-43777 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43777 actively exploited?
CVE-2026-43777 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 46.1% of all scored CVEs.
What is the CVSS score of CVE-2026-43777?
CVE-2026-43777 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-43777?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43777, 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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