CVE-2021-43256

Published on: Not Yet Published

Last Modified on: 01/01/2022 05:48:00 PM UTC

CVE-2021-43256

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

Certain versions of 365 Apps from Microsoft contain the following vulnerability:

Microsoft Excel Remote Code Execution Vulnerability

CVE-2021-43256 has been assigned by [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7.8 - HIGH

Attack Vector ^ⓘ	Attack Complexity	Privileges Required	User Interaction
LOCAL	LOW	NONE	REQUIRED
Scope	Confidentiality Impact	Integrity Impact	Availability Impact
UNCHANGED	HIGH	HIGH	HIGH

CVSS2 Score: 6.8 - MEDIUM

Access Vector^ⓘ	Access Complexity	Authentication
NETWORK	MEDIUM	NONE
Confidentiality Impact	Integrity Impact	Availability Impact
PARTIAL	PARTIAL	PARTIAL

CVE References

Description	Tags ^ⓘ	Link
Security Update Guide - Microsoft Security Response Center	portal.msrc.microsoft.com text/html	MISC portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43256

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].

Related QID Numbers

110396 Microsoft Office Security Update for December 2021

Known Affected Configurations (CPE V2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Application	Microsoft	365 Apps	-	All	All	All
Application	Microsoft	365 Apps	-	All	All	All
Application	Microsoft	Excel	2013	sp1	All	All
Application	Microsoft	Excel	2013	sp1	All	All
Application	Microsoft	Excel	2016	All	All	All
Application	Microsoft	Excel	2016	All	All	All
Application	Microsoft	Excel Rt	2013	sp1	All	All
Application	Microsoft	Office	2019	All	All	All
Application	Microsoft	Office	2019	All	All	All
Application	Microsoft	Office	2021	All	All	All
Application	Microsoft	Office	2021	All	All	All
Application	Microsoft	Office Online Server	-	All	All	All
Application	Microsoft	Office Web Apps	2013	sp1	All	All

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*:
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*:
cpe:2.3:a:microsoft:excel:2013:sp1:*:*:*:*:x64:*:
cpe:2.3:a:microsoft:excel:2013:sp1:*:*:*:*:x86:*:
cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x64:*:
cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x86:*:
cpe:2.3:a:microsoft:excel_rt:2013:sp1:*:*:*:*:*:*:
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*:
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*:
cpe:2.3:a:microsoft:office:2021:*:*:*:ltsc:*:x64:*:
cpe:2.3:a:microsoft:office:2021:*:*:*:ltsc:*:x86:*:
cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:*:
cpe:2.3:a:microsoft:office_web_apps:2013:sp1:*:*:*:*:*:*:

No vendor comments have been submitted for this CVE

Social Mentions

Source	Title	Posted (UTC)
@CVEreport	CVE-2021-43256 : Microsoft Excel Remote Code Execution Vulnerability... cve.report/CVE-2021-43256	2021-12-15 14:41:35
/r/netcve	CVE-2021-43256	2021-12-15 15:38:44