CVE-2026-28896

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: None knownExposed: 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 iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An attacker may be able to cause unexpected system termination or read kernel memory.

CVSS v3
7.7
EG Score
7.7(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
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

July 27, 2026

Last Modified

August 21, 2026

Advisory Details (2)

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

Vendor Advisories for CVE-2026-28896(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 19× in last 7d / 110× 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 129 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-28896?
CVE-2026-28896 is a high vulnerability published on July 27, 2026. The issue was addressed with improved memory handling. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An attacker may be able to cause unexpected system termination or read kernel memory.
When was CVE-2026-28896 disclosed?
CVE-2026-28896 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28896 actively exploited?
CVE-2026-28896 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 91.0% of all scored CVEs.
What is the CVSS score of CVE-2026-28896?
CVE-2026-28896 has a CVSS v3.1 base score of 7.7 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-28896?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28896, 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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