CVE-2021-38656
Microsoft Word Remote Code Execution Vulnerability
7.8 High
Microsoft Word Remote Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
6.73%Up 5.8 points since Sep 16, 2021
What each source reports
CVE List Score used
Microsoft Word Remote Code Execution Vulnerability
Microsoft Word Remote Code Execution Vulnerability
- Record
CVE-2021-38656- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-25095
Microsoft Word Remote Code Execution Vulnerability
- Record
EUVD-2021-25095- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-q5j2-v8q9-65c8
Microsoft Word Remote Code Execution Vulnerability
Microsoft Word Remote Code Execution Vulnerability
- Record
GHSA-q5j2-v8q9-65c8- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
NVD
Microsoft Word Remote Code Execution Vulnerability
- Record
CVE-2021-38656- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-416
- 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-2021-38656 is a high vulnerability (CVSS 7.8) in Microsoft 365 Apps, published September 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.73%, the 94th percentile. No source names a fixed version.