CVE-2026-65343

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

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

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. A remote attacker may be able to cause unexpected system termination.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100CISA SSVC

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.7%
EPSS %ILE
50th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Aug 18, 2026
No patch confirmed yet.
generic

About the security content of iOS 26.6.1 and iPadOS 26.6.1 - Apple Support

https://support.apple.com/en-us/148282
generic

About the security content of macOS Tahoe 26.6.2 - Apple Support

https://support.apple.com/en-us/148281

Vendor Advisories for CVE-2026-65343(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 22× in last 7d / 94× 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 167 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoChidayat-tanjung/CVE-2026-65343-e7eb2ed
    First seen Sep 15, 2026

    CVE-2026-65343: OOB read in AppleKeyStore.kext (_LibSer_SEPControl_Deserialize) copies an ACM buffer to userspace without length validation, letting sandboxed processes leak kernel pointers (0xfffffff0…) and defeat KASLR via DYLD_INTERPOSE ACM handle capture. Fixed in iOS 26.6.1 (23G83).

    Open source ↗
  • GitHub PoCByteV0rtex/CVE-2026-65343
    First seen Sep 2, 2026

    CVE-2026-65343 PoC — AppleKeyStore OOB read → KASLR defeat (iOS 26.6 / 23G71)

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-65343?
CVE-2026-65343 is a high vulnerability published on August 17, 2026. A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. A remote attacker may be able to cause unexpected system termination.
When was CVE-2026-65343 disclosed?
CVE-2026-65343 was first published on August 17, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65343 actively exploited?
CVE-2026-65343 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-65343?
CVE-2026-65343 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-65343?
No fix for CVE-2026-65343 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-65343 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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