CVE-2026-20658 Privilege escalation in macOS
An app can gain root privileges due to a package validation issue in macOS, requiring an upgrade to the latest version.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20658?
CVE-2026-20658 is a high-severity vulnerability in Apple Macos, published on 11 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A package validation issue was addressed by blocking the vulnerable package. This issue is fixed in macOS Tahoe 26.3. An app may be able to gain root privileges.
Which versions are affected by CVE-2026-20658?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-20658?
No fix has been published for CVE-2026-20658 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-20658 being exploited?
There is no known exploitation of CVE-2026-20658 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-r5cf-37x9-4hgv.