CVE-2026-20699 Security feature bypass in macOS
An app may bypass code-signing restrictions to access user-sensitive data on Intel-based Macs, requiring an OS upgrade.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20699?
CVE-2026-20699 is a medium-severity vulnerability in Apple Macos, published on 25 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, macOS Tahoe 26.4. An app may be able to access user-sensitive data.
Weakness: CWE-347
Which versions are affected by CVE-2026-20699?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-20699?
No fix has been published for CVE-2026-20699 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-20699 being exploited?
There is no known exploitation of CVE-2026-20699 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-943h-6fx4-c427.