CVE-2020-9855

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. A local attacker may be able to elevate their privileges.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published
Jun 9, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-98565.3This issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15.5. An application may be able to gain elevated prCVE-2020-98574.3An issue existed in the parsing of URLs. This issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.1CVE-2020-98587.8A dynamic library loading issue was addressed with improved path searching. This issue is fixed in Windows Migration Assistant 2.2.0.0 (v. 1CVE-2020-98597.8A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina CVE-2020-98605.4A custom URL scheme handling issue was addressed with improved input validation. This issue is fixed in Safari 13.0.5. Processing a maliciouCVE-2020-98617.5A stack overflow issue existed in Swift for Linux. The issue was addressed with improved input validation for dealing with deeply nested malCVE-2020-98627.8A command injection issue existed in Web Inspector. This issue was addressed with improved escaping. This issue is fixed in iOS 13.6 and iPaCVE-2020-98637.8A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 1CVE-2020-98649.8A logic issue was addressed with improved restrictions. This issue is fixed in macOS Catalina 10.15.6. An application may be able to executeCVE-2020-98658.6A memory corruption issue was addressed by removing the vulnerable code. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.CVE-2020-98669.8A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Catalina 10.15.6, Security Update 2020-004 MojavCVE-2020-98689.1A certificate validation issue existed when processing administrator added certificates. This issue was addressed with improved certificate
CVE-2020-9855: High severity, CVSS 7.8 | Vulnix