Privilege escalation in Windows Malicious Software Removal Tool
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-0733 |
| CWE-ID | CWE-20 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
Windows Malicious Software Removal Tool (MSRT) Client/Desktop applications / Antivirus software/Personal firewalls |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU25249
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-0733
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect handling of junctions in Windows Malicious Software Removal Tool (MSRT). A local user can run a specially crafted application to elevate privileges on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWindows Malicious Software Removal Tool (MSRT): before 5.80
CPE2.3 External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0733
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
