CVE-2026-39868

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.1Exploit: NoneExposed: 0

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

This issue was addressed with improved input validation. This issue is fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. An app may be able to cause unexpected system termination or corrupt kernel memory.

CVSS v3
9.1
EG Score
9.1(high)
EPSS
29.1%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 30, 2026

Advisory Details (2)

Auto-updated Jun 30, 2026
No patch confirmed yet.
generic

About the security content of macOS Tahoe 26.5.2 - Apple Support

https://support.apple.com/en-us/127595
generic

About the security content of iOS 26.5.2 and iPadOS 26.5.2 - Apple Support

https://support.apple.com/en-us/127594

Vendor Advisories for CVE-2026-39868(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 65× in last 7d / 68× 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. 2026-07-07 05:17 UTCEG score recompute
  2. 2026-07-07 05:17 UTCGHSA enrichment
  3. 2026-07-07 01:20 UTCEG score recompute
  4. 2026-07-07 01:20 UTCGHSA enrichment
  5. 2026-07-06 21:24 UTCEG score recompute
  6. 2026-07-06 21:24 UTCGHSA enrichment
  7. 2026-07-06 17:27 UTCEG score recompute
  8. 2026-07-06 17:26 UTCGHSA enrichment
  9. 2026-07-06 16:27 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 13:29 UTCEG score recompute
  12. 2026-07-06 13:29 UTCGHSA enrichment
  13. 2026-07-06 09:28 UTCEG score recompute
  14. 2026-07-06 09:28 UTCGHSA enrichment
  15. 2026-07-06 05:30 UTCEG score recompute
  16. 2026-07-06 05:30 UTCGHSA enrichment
  17. 2026-07-06 02:23 UTCEPSS rescore
  18. 2026-07-06 02:23 UTCEPSS rescore
  19. 2026-07-06 01:34 UTCEG score recompute
  20. 2026-07-06 01:33 UTCGHSA enrichment
  21. 2026-07-05 21:37 UTCEG score recompute
  22. 2026-07-05 21:37 UTCGHSA enrichment
  23. 2026-07-05 17:41 UTCEG score recompute
  24. 2026-07-05 17:41 UTCGHSA enrichment
  25. 2026-07-05 13:45 UTCEG score recompute
Show 43 more
  1. 2026-07-05 13:45 UTCGHSA enrichment
  2. 2026-07-05 09:49 UTCEG score recompute
  3. 2026-07-05 09:49 UTCGHSA enrichment
  4. 2026-07-05 05:49 UTCEG score recompute
  5. 2026-07-05 05:49 UTCGHSA enrichment
  6. 2026-07-05 02:30 UTCEPSS rescore
  7. 2026-07-05 01:51 UTCEG score recompute
  8. 2026-07-05 01:51 UTCGHSA enrichment
  9. 2026-07-04 21:55 UTCEG score recompute
  10. 2026-07-04 21:55 UTCGHSA enrichment
  11. 2026-07-04 17:59 UTCEG score recompute
  12. 2026-07-04 17:59 UTCGHSA enrichment
  13. 2026-07-04 14:02 UTCEG score recompute
  14. 2026-07-04 14:02 UTCGHSA enrichment
  15. 2026-07-04 10:02 UTCEG score recompute
  16. 2026-07-04 10:02 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-04 06:06 UTCEG score recompute
  19. 2026-07-04 06:06 UTCGHSA enrichment
  20. 2026-07-04 02:08 UTCEG score recompute
  21. 2026-07-04 02:08 UTCGHSA enrichment
  22. 2026-07-03 22:12 UTCEG score recompute
  23. 2026-07-03 22:12 UTCGHSA enrichment
  24. 2026-07-03 18:16 UTCEG score recompute
  25. 2026-07-03 18:16 UTCGHSA enrichment
  26. 2026-07-03 14:20 UTCEG score recompute
  27. 2026-07-03 14:20 UTCGHSA enrichment
  28. 2026-07-03 10:25 UTCEG score recompute
  29. 2026-07-03 10:25 UTCGHSA enrichment
  30. 2026-07-03 06:27 UTCEG score recompute
  31. 2026-07-03 06:26 UTCGHSA enrichment
  32. 2026-07-03 02:28 UTCEG score recompute
  33. 2026-07-03 02:28 UTCGHSA enrichment
  34. 2026-07-02 22:29 UTCEG score recompute
  35. 2026-07-02 22:29 UTCGHSA enrichment
  36. 2026-07-02 18:33 UTCEG score recompute▲ 9.10
  37. 2026-07-02 18:33 UTCGHSA enrichment
  38. 2026-07-01 15:06 UTCEPSS rescore
  39. 2026-06-30 23:22 UTCEPSS rescore
  40. 2026-06-30 14:32 UTCNVD updateCVSS v3 → 9.1 · severity → CRITICAL
  41. 2026-06-29 21:26 UTCNVD update
  42. 2026-06-29 20:17 UTCEG score recompute
  43. 2026-06-29 20:17 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-39868?
CVE-2026-39868 is a critical vulnerability published on June 29, 2026. This issue was addressed with improved input validation. This issue is fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. An app may be able to cause unexpected system termination or corrupt kernel memory.
When was CVE-2026-39868 disclosed?
CVE-2026-39868 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39868 actively exploited?
CVE-2026-39868 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-39868?
CVE-2026-39868 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-39868?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39868, 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-2026-39868

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