How severe is CVE-2026-28817?

CVE-2026-28817 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28817 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28817?

CVE-2026-28817 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28817?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-28817 have an EU (EUVD) identifier?

Yes. CVE-2026-28817 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15079.

When was CVE-2026-28817 published?

CVE-2026-28817 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2026-28817

CVE-2026-28817 is a high-severity vulnerability in Apple Macos with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-15079
Weakness: CWE-362
Affected product: Apple Macos
Published: 2026-03-25
Last modified: 2026-06-17

Description

A race condition was addressed with improved state handling. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. A sandboxed process may be able to circumvent sandbox restrictions.

Frequently asked questions

What is CVE-2026-28817?: A race condition was addressed with improved state handling. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. A sandboxed process may be able to circumvent sandbox restrictions.
How severe is CVE-2026-28817?: CVE-2026-28817 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28817 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28817?: CVE-2026-28817 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28817?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-28817 have an EU (EUVD) identifier?: Yes. CVE-2026-28817 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15079.
When was CVE-2026-28817 published?: CVE-2026-28817 was published on 2026-03-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

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