CVE-2021-31939
Microsoft Excel Remote Code Execution Vulnerability
Severity Score
7.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Microsoft Excel Remote Code Execution Vulnerability
Una vulnerabilidad de Ejecución de Código Remota en Microsoft Excel
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Excel. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of XLS files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.
*Credits:
kdot
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-04-30 CVE Reserved
- 2021-06-08 CVE Published
- 2024-08-03 CVE Updated
- 2024-10-11 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (2)
| URL | Tag | Source |
|---|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-21-670 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31939 | 2023-08-01 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Microsoft Search vendor "Microsoft" | 365 Apps Search vendor "Microsoft" for product "365 Apps" | - | enterprise |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Excel Search vendor "Microsoft" for product "Excel" | 2013 Search vendor "Microsoft" for product "Excel" and version "2013" | sp1 |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Excel Search vendor "Microsoft" for product "Excel" | 2013 Search vendor "Microsoft" for product "Excel" and version "2013" | sp1, rt |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Excel Search vendor "Microsoft" for product "Excel" | 2016 Search vendor "Microsoft" for product "Excel" and version "2016" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Office Search vendor "Microsoft" for product "Office" | 2013 Search vendor "Microsoft" for product "Office" and version "2013" | sp1 |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Office Search vendor "Microsoft" for product "Office" | 2013 Search vendor "Microsoft" for product "Office" and version "2013" | sp1, rt |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Office Search vendor "Microsoft" for product "Office" | 2016 Search vendor "Microsoft" for product "Office" and version "2016" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Office Search vendor "Microsoft" for product "Office" | 2019 Search vendor "Microsoft" for product "Office" and version "2019" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Office Online Server Search vendor "Microsoft" for product "Office Online Server" | - | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Office Web Apps Server Search vendor "Microsoft" for product "Office Web Apps Server" | 2013 Search vendor "Microsoft" for product "Office Web Apps Server" and version "2013" | sp1 |
Affected
| ||||||