CVE-2026-64721

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: 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 through improved state management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to access sensitive user data.

CVSS v3
5.5
EG Score
5.5(high)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

July 27, 2026

Last Modified

August 17, 2026

Advisory Details (7)

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 visionOS 26.6 - Apple Support

https://support.apple.com/en-us/128070
generic

About the security content of tvOS 26.6 - Apple Support

https://support.apple.com/en-us/128069
generic

About the security content of watchOS 26.6 - Apple Support

https://support.apple.com/en-us/128068
generic

About the security content of macOS Tahoe 26.6 - Apple Support

https://support.apple.com/en-us/128067
generic

About the security content of iOS 26.6 and iPadOS 26.6 - Apple Support

https://support.apple.com/en-us/128066

Vendor Advisories for CVE-2026-64721(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 18× in last 7d / 91× 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.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-25 08:43 UTCEG score recompute
  3. 2026-08-25 08:43 UTCGHSA enrichment
  4. 2026-08-24 10:37 UTCEG score recompute
  5. 2026-08-24 10:36 UTCGHSA enrichment
  6. 2026-08-23 12:27 UTCEG score recompute
  7. 2026-08-23 12:27 UTCGHSA enrichment
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-22 14:21 UTCEG score recompute
  10. 2026-08-22 14:21 UTCGHSA enrichment
  11. 2026-08-21 23:49 UTCEPSS rescore
  12. 2026-08-21 16:02 UTCEG score recompute
  13. 2026-08-21 16:02 UTCGHSA enrichment
  14. 2026-08-20 22:55 UTCEPSS rescore
  15. 2026-08-20 17:55 UTCGHSA enrichment
  16. 2026-08-19 19:49 UTCEG score recompute
  17. 2026-08-19 19:49 UTCGHSA enrichment
  18. 2026-08-19 17:04 UTCEPSS rescore
  19. 2026-08-18 20:28 UTCEG score recompute
  20. 2026-08-18 20:28 UTCGHSA enrichment
  21. 2026-08-18 13:48 UTCEPSS rescore
  22. 2026-08-17 22:22 UTCGHSA enrichment
  23. 2026-08-17 21:41 UTCEG score recompute
  24. 2026-08-17 21:41 UTCGHSA enrichment
  25. 2026-08-17 13:47 UTCEPSS rescore
Show 66 more
  1. 2026-08-17 04:47 UTCEG score recompute
  2. 2026-08-17 04:47 UTCGHSA enrichment
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 06:40 UTCEG score recompute
  5. 2026-08-16 06:40 UTCGHSA enrichment
  6. 2026-08-15 08:34 UTCEG score recompute
  7. 2026-08-15 08:34 UTCGHSA enrichment
  8. 2026-08-15 01:30 UTCEPSS rescore
  9. 2026-08-14 10:27 UTCEG score recompute
  10. 2026-08-14 10:27 UTCGHSA enrichment
  11. 2026-08-13 22:00 UTCEPSS rescore
  12. 2026-08-13 12:20 UTCGHSA enrichment
  13. 2026-08-12 14:14 UTCEG score recompute
  14. 2026-08-12 14:14 UTCGHSA enrichment
  15. 2026-08-12 13:51 UTCEPSS rescore
  16. 2026-08-11 16:07 UTCEG score recompute
  17. 2026-08-11 16:07 UTCGHSA enrichment
  18. 2026-08-11 00:00 UTCEPSS rescore
  19. 2026-08-10 18:01 UTCGHSA enrichment
  20. 2026-08-09 19:41 UTCEG score recompute
  21. 2026-08-09 19:41 UTCGHSA enrichment
  22. 2026-08-09 13:47 UTCEPSS rescore
  23. 2026-08-08 21:35 UTCEG score recompute
  24. 2026-08-08 21:35 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-07 23:28 UTCGHSA enrichment
  27. 2026-08-07 01:21 UTCEG score recompute
  28. 2026-08-07 01:21 UTCGHSA enrichment
  29. 2026-08-06 13:47 UTCEPSS rescore
  30. 2026-08-06 03:15 UTCEG score recompute
  31. 2026-08-06 03:15 UTCGHSA enrichment
  32. 2026-08-05 19:17 UTCEPSS rescore
  33. 2026-08-05 19:17 UTCEPSS rescore
  34. 2026-08-05 05:08 UTCEG score recompute
  35. 2026-08-05 05:08 UTCGHSA enrichment
  36. 2026-08-04 15:10 UTCEPSS rescore
  37. 2026-08-04 10:39 UTCEPSS rescore
  38. 2026-08-04 06:59 UTCEG score recompute
  39. 2026-08-04 06:59 UTCGHSA enrichment
  40. 2026-08-03 10:36 UTCEPSS rescore
  41. 2026-08-03 08:53 UTCGHSA enrichment
  42. 2026-08-02 10:46 UTCEG score recompute
  43. 2026-08-02 10:46 UTCGHSA enrichment
  44. 2026-08-02 02:27 UTCEPSS rescore
  45. 2026-08-01 12:39 UTCEG score recompute
  46. 2026-08-01 12:39 UTCGHSA enrichment
  47. 2026-08-01 04:16 UTCEPSS rescore
  48. 2026-07-31 14:32 UTCEG score recompute
  49. 2026-07-31 14:32 UTCGHSA enrichment
  50. 2026-07-30 16:28 UTCEPSS rescore
  51. 2026-07-30 16:23 UTCEG score recompute
  52. 2026-07-30 16:23 UTCGHSA enrichment
  53. 2026-07-30 01:30 UTCEPSS rescore
  54. 2026-07-30 01:30 UTCEPSS rescore
  55. 2026-07-29 18:13 UTCGHSA enrichment
  56. 2026-07-28 20:06 UTCGHSA enrichment
  57. 2026-07-28 16:41 UTCGHSA enrichment
  58. 2026-07-28 15:43 UTCEG score recompute
  59. 2026-07-28 15:43 UTCGHSA enrichment
  60. 2026-07-28 15:37 UTCEPSS rescore
  61. 2026-07-28 14:39 UTCEG score recompute▲ 5.50
  62. 2026-07-28 14:39 UTCGHSA enrichment
  63. 2026-07-28 14:38 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
  64. 2026-07-27 21:19 UTCNVD update
  65. 2026-07-27 20:26 UTCEG score recompute
  66. 2026-07-27 20:24 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-64721?
CVE-2026-64721 is a medium vulnerability published on July 27, 2026. This issue was addressed through improved state management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to access sensitive user data.
When was CVE-2026-64721 disclosed?
CVE-2026-64721 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64721 actively exploited?
CVE-2026-64721 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 92.1% of all scored CVEs.
What is the CVSS score of CVE-2026-64721?
CVE-2026-64721 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-64721?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64721, 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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