CVE-2020-9901

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-22 · updated 2026-06-17
Weakness: CWE-59

Description

An issue existed within the path validation logic for symlinks. This issue was addressed with improved path sanitization. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8. A local attacker may be able to elevate their privileges.

Affected products

Apple iPadOS: before 13.6 — fixed in 13.6
Apple Iphone Os: before 13.6 — fixed in 13.6
macOS: before 10.15.6 — fixed in 10.15.6
Apple tvOS: before 13.4.8 — fixed in 13.4.8

How to fix

Upgrade to a fixed version: Apple iPadOS 13.6; Apple Iphone Os 13.6; macOS 10.15.6; Apple tvOS 13.4.8. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2020-9901 or the next vulnerability affects your stack