Multiple vulnerabilities in Microsoft Windows Application Compatibility Client Library
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-16876 CVE-2020-16920 |
| CWE-ID | CWE-264 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU47600
Risk: Low
CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-16876
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way Windows Application Compatibility Client Library handles registry operations. A local user can create a malicious application, launch it on the system and gain elevated privileges.
To exploit the vulnerability, an attacker would first need code execution on a victim system.
MitigationInstall update from vendor's website.
Vulnerable software versionsWindows: 10 - 10 2004
Windows Server: 2016 - 2019 2004
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16876
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.
2) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU47601
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-16920
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way Windows Application Compatibility Client Library handles registry operations. A local user can create a malicious application, launch it on the system and gain elevated privileges.
To exploit the vulnerability, an attacker would first need code execution on a victim system.
MitigationInstall update from vendor's website.
Vulnerable software versionsWindows: 7 - 10 2004
Windows Server: 2008 R2 - 2019 2004
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16920
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.
