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NVD Vulnerability Details :

CVE-2021-43905

Analyzed

More Info Official Page

Source-secure@microsoft.com

Published At-15 Dec, 2021 | 15:15

Updated At-11 Jun, 2025 | 15:27

Microsoft Office app Remote Code Execution Vulnerability

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	9.6	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Primary	3.1	9.6	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Primary	2.0	6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P

Type: Secondary

Version: 3.1

Base score: 9.6

Base severity: CRITICAL

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Type: Primary

Version: 3.1

Base score: 9.6

Base severity: CRITICAL

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Type: Primary

Version: 2.0

Base score: 6.8

Base severity: MEDIUM

Vector:

AV:N/AC:M/Au:N/C:P/I:P/A:P

CPE Matches

Microsoft Corporation

>>365_copilot>>Versions before 18.2110.13110.0(exclusive)

cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
NVD-CWE-noinfo	Primary	nvd@nist.gov

CWE ID: NVD-CWE-noinfo

Type: Primary

Source: nvd@nist.gov

References

Hyperlink	Source	Resource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43905	secure@microsoft.com	Patch Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43905	af854a3a-2127-422b-91ae-364da2661108	Patch Vendor Advisory

Hyperlink: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43905

Source: secure@microsoft.com

Resource:

Patch

Vendor Advisory

Hyperlink: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43905

Source: af854a3a-2127-422b-91ae-364da2661108

Resource:

Patch

Vendor Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History