Windows Hard Link in Windows Defender - CVE-2020-0835
Published: April 14, 2020
Vulnerability identifier: #VU26881
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-0835
CWE-ID: CWE-65
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the Windows Defender antimalware platform improperly handles hard links. A local user can run a specially crafted application and overwrite a targeted file leading to an elevated status.
Affected software
Windows Defender
How to mitigate CVE-2020-0835
Install update from vendor's website.
Windows Defender - update to 4.18.2001.112