CVE-2026-28900 Security feature bypass in macOS
Attackers can bypass Gatekeeper security checks using malicious ZIP archives, allowing potentially harmful code to execute on macOS systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-28900?
CVE-2026-28900 is a medium-severity vulnerability in Apple Macos, published on 27 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A file quarantine bypass was addressed with additional checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5. A maliciously crafted ZIP archive may bypass Gatekeeper checks.
Which versions are affected by CVE-2026-28900?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-28900?
No fix has been published for CVE-2026-28900 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-28900 being exploited?
There is no known exploitation of CVE-2026-28900 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-79fp-6cmr-w263.