Remote code execution in Microsoft Office
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-21840 |
| CWE-ID | CWE-94 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Microsoft SharePoint Server Server applications / Application servers Microsoft Office Web Apps Server Server applications / Application servers Microsoft Office Client/Desktop applications / Office applications Microsoft Excel Client/Desktop applications / Office applications Office Online Server Server applications / Other server solutions |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Code Injection
EUVDB-ID: #VU59476
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-21840
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in Microsoft Office. A remote attacker can trick a victim to open a specially crafted file, and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2013 - 2019
Microsoft SharePoint Server: 2013
Microsoft Office: 2013 RT - 2019
Office Online Server: 2016
Microsoft Excel: 2013 RT Service Pack 1 - 2016
Microsoft Office Web Apps Server: 2013 Service Pack 1
CPE2.3- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2013:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2016:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2019:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2013:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_office:*:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_office:*:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_office:*:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:office_online_server:2016:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_excel:2013 RT Service Pack 1:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_excel:*:*:*:*:*:*:*:
- cpe:2.3:a:microsoft:microsoft_office_web_apps_server:2013 Service Pack 1:*:*:*:*:*:*:
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21840
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
