CVE-2026-39870

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-11. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. Processing a maliciously crafted image may corrupt process memory.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
23.0%
KEV
Not listed

Published

May 11, 2026

Last Modified

May 13, 2026

Advisory Details (3)

Auto-updated Jun 10, 2026
No patch confirmed yet.
generic

About the security content of macOS Sonoma 14.8.7 - Apple Support

https://support.apple.com/en-us/127117
generic

About the security content of macOS Sequoia 15.7.7 - Apple Support

https://support.apple.com/en-us/127116
generic

About the security content of macOS Tahoe 26.5 - Apple Support

https://support.apple.com/en-us/127115

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 49× 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 152 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-39870?
CVE-2026-39870 is a high vulnerability published on May 11, 2026. The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. Processing a maliciously crafted image may corrupt process memory.
When was CVE-2026-39870 disclosed?
CVE-2026-39870 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39870 actively exploited?
CVE-2026-39870 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-39870?
CVE-2026-39870 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-39870?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39870, 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

Explore the affected products and dependency analysis for CVE-2026-39870

Explore →

Is Your Infrastructure Affected by CVE-2026-39870?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs