Critical severity · published Dec 15, 2021
CVE-2021-43905
Microsoft Office app Remote Code Execution Vulnerability
9.6
CVSS
3%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)3.0% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
3C
365 Copilot · Microsoft
before 18.2110.13110.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43905
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43905
Patch
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43905
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