Vulnerability Details : CVE-2021-31198
Microsoft Exchange Server Remote Code Execution Vulnerability
Vulnerability category: Input validationExecute code
Exploit prediction scoring system (EPSS) score for CVE-2021-31198
Probability of exploitation activity in the next 30 days: 1.07%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 84 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-31198
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
Microsoft Corporation |
CWE ids for CVE-2021-31198
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31198
-
https://www.zerodayinitiative.com/advisories/ZDI-21-894/
ZDI-21-894 | Zero Day InitiativeThird Party Advisory;VDB Entry
-
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31198
CVE-2021-31198 - Security Update Guide - Microsoft - Microsoft Exchange Server Remote Code Execution VulnerabilityPatch;Vendor Advisory
Products affected by CVE-2021-31198
- cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*
- cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*
- cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*