Vulnerability Details : CVE-2021-31209
Microsoft Exchange Server Spoofing Vulnerability
Products affected by CVE-2021-31209
- 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:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31209
2.71%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31209
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST | |
|
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
2.8
|
5.2
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
2.2
|
4.2
|
Microsoft Corporation |
References for CVE-2021-31209
-
https://www.zerodayinitiative.com/advisories/ZDI-21-615/
ZDI-21-615 | Zero Day InitiativeThird Party Advisory;VDB Entry
-
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31209
CVE-2021-31209 - Security Update Guide - Microsoft - Microsoft Exchange Server Spoofing VulnerabilityPatch;Vendor Advisory
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