CVE-2026-64774

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

An integer overflow was addressed with improved input validation. 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. A remote attacker may be able to cause unexpected application termination or heap corruption.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

July 27, 2026

Last Modified

August 17, 2026

Advisory Details (7)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

About the security content of iOS 18.7.10 and iPadOS 18.7.10 - Apple Support

https://support.apple.com/en-us/148287
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 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-2026-64774(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 32× in last 7d / 156× 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 311 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64774?
CVE-2026-64774 is a critical vulnerability published on July 27, 2026. An integer overflow was addressed with improved input validation. 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. A remote attacker may be able to cause unexpected application…
When was CVE-2026-64774 disclosed?
CVE-2026-64774 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-2026-64774 actively exploited?
CVE-2026-64774 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 50.8% of all scored CVEs.
What is the CVSS score of CVE-2026-64774?
CVE-2026-64774 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-64774?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64774, 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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