CVE-2026-28826

MEDIUMNVD 4.04.0—

4.0

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. A malicious app may be able to break out of its sandbox.

CVSS v3: 4.0
EG Score: 4.0(medium)
EPSS: 4.0%
KEV: Not listed

Published

March 25, 2026

Last Modified

May 11, 2026

Advisory Details (3)

Auto-updated May 12, 2026

No patch confirmed yet.

generic

About the security content of macOS Sonoma 14.8.5 - Apple Support

https://support.apple.com/en-us/126796

generic

About the security content of macOS Sequoia 15.7.5 - Apple Support

https://support.apple.com/en-us/126795

generic

About the security content of macOS Tahoe 26.4 - Apple Support

https://support.apple.com/en-us/126794

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
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2026-05-29 13:44 UTCepss_batch
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2026-05-27 13:40 UTCepss_batch
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2026-05-26 13:44 UTCepss_batch
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2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-28826?

CVE-2026-28826 is a medium vulnerability published on March 25, 2026. A logic issue was addressed with improved restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. A malicious app may be able to break out of its sandbox.

When was CVE-2026-28826 disclosed?

CVE-2026-28826 was first published in the National Vulnerability Database on March 25, 2026, with the most recent update on May 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-28826 actively exploited?

CVE-2026-28826 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-28826?

CVE-2026-28826 has a CVSS v3 base score of 4.0 (NVD).

How do I remediate CVE-2026-28826?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28826, 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

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CVE-2026-28826

📅 Published

🔄 Last Modified

📋 Advisory Details (3)

About the security content of macOS Sonoma 14.8.5 - Apple Support

About the security content of macOS Sequoia 15.7.5 - Apple Support

About the security content of macOS Tahoe 26.4 - Apple Support

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-28826?

Published

Last Modified

Advisory Details (3)

Frequently asked(5)