Privilege escalation in Microsoft Windows AppX Deployment Service
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-41347 |
| 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 one low risk vulnerability.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU57289
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-2021-41347
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 application does not properly impose security restrictions in Windows AppX Deployment Service, which leads to security restrictions bypass and privilege escalation.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWindows: 10 - 11 21H2 10.0.22000.194
Windows Server: 2016 10.0.14393.10 - 2019 2004
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41347
http://www.zerodayinitiative.com/advisories/ZDI-21-1161/
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.
