CVE-2026-39874

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A malicious app may be able to gain root privileges.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 29, 2026

Advisory Details (3)

Auto-updated Jul 27, 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-2026-39874(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 22× in last 7d / 89× 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 173 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-39874?
CVE-2026-39874 is a high vulnerability published on July 27, 2026. A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A malicious app may be able to gain root privileges.
When was CVE-2026-39874 disclosed?
CVE-2026-39874 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on July 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39874 actively exploited?
CVE-2026-39874 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.4% of all scored CVEs.
What is the CVSS score of CVE-2026-39874?
CVE-2026-39874 has a CVSS v3.1 base score of 7.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-39874?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39874, 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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