CVE-2026-28978 Privilege escalation in macOS

What is CVE-2026-28978?

CVE-2026-28978 is a high-severity vulnerability in Apple Macos, published on 11 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. A malicious app may be able to break out of its sandbox.

Weakness: CWE-284

Which versions are affected by CVE-2026-28978?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2026-28978?

No fix has been published for CVE-2026-28978 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-28978 being exploited?

There is no known exploitation of CVE-2026-28978 in the wild and no public exploit code.

Other vulnerabilities in Apple Macos

• CVE-2026-65400 Apple macOS Improper Authentication Exploited Critical 9.8
• CVE-2024-44146 Security feature bypass in macOS Critical 10.0
• CVE-2024-44148 Security feature bypass in macOS Critical 10.0
• CVE-2023-38586 Security feature bypass in macOS Critical 10.0
• CVE-2023-40455 Security feature bypass in macOS Critical 10.0

All Apple Macos vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-q2h4-qm5p-28rc.