How severe is CVE-2026-28827?

CVE-2026-28827 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28827 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28827?

CVE-2026-28827 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28827?

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

Does CVE-2026-28827 have an EU (EUVD) identifier?

Yes. CVE-2026-28827 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15097.

When was CVE-2026-28827 published?

CVE-2026-28827 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2026-28827

CVE-2026-28827 is a critical-severity vulnerability in Apple Macos with a CVSS 3.x base score of 9.3. 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-15097
Weakness: CWE-22
Affected product: Apple Macos
Published: 2026-03-25
Last modified: 2026-06-17

Description

A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to break out of its sandbox.

Frequently asked questions

What is CVE-2026-28827?: A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to break out of its sandbox.
How severe is CVE-2026-28827?: CVE-2026-28827 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28827 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28827?: CVE-2026-28827 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28827?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-28827 have an EU (EUVD) identifier?: Yes. CVE-2026-28827 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15097.
When was CVE-2026-28827 published?: CVE-2026-28827 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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