CVE-2026-43753

MEDIUMPre-NVD 4.64.6—
EchelonGraph scoreMEDIUM confidence

Score 4.6 from GitHub Security Advisory published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.6Exploit: None knownExposed: 0

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

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An attacker with physical access to a locked device may be able to view sensitive user information.

CVSS v3
4.6
EG Score
4.6(medium)
EG Risk
21(Track)
EG Risk 21/100SSVC: 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
Severity46% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 28, 2026

Advisory Details (4)

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 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-2026-43753(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 / 87× 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 103 total refreshes for this CVE.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 23:46 UTCEG score recompute
  3. 2026-08-29 23:46 UTCGHSA enrichment
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-28 01:45 UTCEG score recompute
  6. 2026-08-28 01:45 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-27 03:46 UTCEG score recompute
  9. 2026-08-27 03:45 UTCGHSA enrichment
  10. 2026-08-26 14:46 UTCEPSS rescore
  11. 2026-08-26 05:46 UTCEG score recompute
  12. 2026-08-26 05:46 UTCGHSA enrichment
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-25 07:47 UTCEG score recompute
  15. 2026-08-25 07:47 UTCGHSA enrichment
  16. 2026-08-24 09:47 UTCEG score recompute
  17. 2026-08-24 09:47 UTCGHSA enrichment
  18. 2026-08-23 11:48 UTCEG score recompute
  19. 2026-08-23 11:48 UTCGHSA enrichment
  20. 2026-08-23 00:19 UTCEPSS rescore
  21. 2026-08-22 13:49 UTCEG score recompute
  22. 2026-08-22 13:49 UTCGHSA enrichment
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-21 15:50 UTCEG score recompute
  25. 2026-08-21 15:50 UTCGHSA enrichment
Show 75 more
  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 17:51 UTCGHSA enrichment
  3. 2026-08-19 19:53 UTCEG score recompute
  4. 2026-08-19 19:52 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-18 21:48 UTCEG score recompute
  7. 2026-08-18 21:48 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 23:50 UTCEG score recompute
  10. 2026-08-17 23:50 UTCGHSA enrichment
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-17 01:51 UTCEG score recompute
  13. 2026-08-17 01:51 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 03:52 UTCEG score recompute
  16. 2026-08-16 03:52 UTCGHSA enrichment
  17. 2026-08-16 02:14 UTCEPSS rescore
  18. 2026-08-15 05:53 UTCEG score recompute
  19. 2026-08-15 05:53 UTCGHSA enrichment
  20. 2026-08-15 01:30 UTCEPSS rescore
  21. 2026-08-14 07:54 UTCEG score recompute
  22. 2026-08-14 07:54 UTCGHSA enrichment
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-13 09:55 UTCEG score recompute
  25. 2026-08-13 09:55 UTCGHSA enrichment
  26. 2026-08-12 13:51 UTCEPSS rescore
  27. 2026-08-12 11:56 UTCGHSA enrichment
  28. 2026-08-11 13:57 UTCEG score recompute
  29. 2026-08-11 13:57 UTCGHSA enrichment
  30. 2026-08-11 13:43 UTCEPSS rescore
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-10 15:58 UTCGHSA enrichment
  33. 2026-08-09 17:35 UTCEG score recompute
  34. 2026-08-09 17:35 UTCGHSA enrichment
  35. 2026-08-09 13:46 UTCEPSS rescore
  36. 2026-08-08 19:37 UTCEG score recompute
  37. 2026-08-08 19:37 UTCGHSA enrichment
  38. 2026-08-08 16:37 UTCEPSS rescore
  39. 2026-08-07 21:38 UTCEG score recompute
  40. 2026-08-07 21:38 UTCGHSA enrichment
  41. 2026-08-06 23:39 UTCEG score recompute
  42. 2026-08-06 23:39 UTCGHSA enrichment
  43. 2026-08-06 13:46 UTCEPSS rescore
  44. 2026-08-06 01:40 UTCEG score recompute
  45. 2026-08-06 01:40 UTCGHSA enrichment
  46. 2026-08-05 19:17 UTCEPSS rescore
  47. 2026-08-05 03:41 UTCEG score recompute
  48. 2026-08-05 03:41 UTCGHSA enrichment
  49. 2026-08-04 15:10 UTCEPSS rescore
  50. 2026-08-04 10:38 UTCEPSS rescore
  51. 2026-08-04 05:42 UTCEG score recompute
  52. 2026-08-04 05:42 UTCGHSA enrichment
  53. 2026-08-03 10:36 UTCEPSS rescore
  54. 2026-08-03 07:43 UTCGHSA enrichment
  55. 2026-08-02 09:44 UTCEG score recompute
  56. 2026-08-02 09:44 UTCGHSA enrichment
  57. 2026-08-02 02:27 UTCEPSS rescore
  58. 2026-08-01 11:45 UTCEG score recompute
  59. 2026-08-01 11:45 UTCGHSA enrichment
  60. 2026-08-01 04:16 UTCEPSS rescore
  61. 2026-07-31 13:46 UTCEG score recompute
  62. 2026-07-31 13:46 UTCGHSA enrichment
  63. 2026-07-30 16:28 UTCEPSS rescore
  64. 2026-07-30 15:47 UTCEG score recompute
  65. 2026-07-30 15:47 UTCGHSA enrichment
  66. 2026-07-30 01:30 UTCEPSS rescore
  67. 2026-07-29 17:46 UTCGHSA enrichment
  68. 2026-07-28 19:46 UTCGHSA enrichment
  69. 2026-07-28 16:42 UTCGHSA enrichment
  70. 2026-07-28 15:46 UTCEG score recompute
  71. 2026-07-28 15:45 UTCGHSA enrichment
  72. 2026-07-28 15:36 UTCEPSS rescore
  73. 2026-07-28 14:41 UTCEG score recompute▲ 4.60
  74. 2026-07-28 14:41 UTCGHSA enrichment
  75. 2026-07-28 14:38 UTCMITRE cvelistV5CVSS v3 → 4.6 · severity → MEDIUM

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43753?
CVE-2026-43753 is a medium vulnerability published on July 27, 2026. An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An attacker with physical access to a locked device may be able to view sensitive user information.
When was CVE-2026-43753 disclosed?
CVE-2026-43753 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43753 actively exploited?
CVE-2026-43753 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 85.4% of all scored CVEs.
What is the CVSS score of CVE-2026-43753?
CVE-2026-43753 has a CVSS v3.1 base score of 4.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-43753?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43753, 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-2026-43753

Explore →

Is Your Infrastructure Affected by CVE-2026-43753?

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

Start Free Scan →Browse All CVEs