CVE-2021-43905
Microsoft Office app Remote Code Execution Vulnerability
Microsoft Office app Remote Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Office app Remote Code Execution Vulnerability
Microsoft Office app Remote Code Execution Vulnerability
- Record
CVE-2021-43905- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-30767
Microsoft Office app Remote Code Execution Vulnerability
- Record
EUVD-2021-30767- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-p5c8-x5qh-v2mv
Microsoft Office app Remote Code Execution Vulnerability
Microsoft Office app Remote Code Execution Vulnerability
- Record
GHSA-p5c8-x5qh-v2mv- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
Microsoft Office app Remote Code Execution Vulnerability
- Record
CVE-2021-43905- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-43905 is a critical vulnerability (CVSS 9.6) in Microsoft Office App, published December 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.09%, the 87th percentile. No source names a fixed version.