6.6
CVE-2021-31207
- EPSS 93.87%
- Published 11.05.2021 19:15:10
- Last modified 13.03.2025 16:41:49
- Source secure@microsoft.com
- Teams watchlist Login
- Open Login
Microsoft Exchange Server Security Feature Bypass Vulnerability
Data is provided by the National Vulnerability Database (NVD)
Microsoft ≫ Exchange Server Version2013 Updatecumulative_update_23
Microsoft ≫ Exchange Server Version2016 Updatecumulative_update_19
Microsoft ≫ Exchange Server Version2016 Updatecumulative_update_20
Microsoft ≫ Exchange Server Version2019 Updatecumulative_update_8
Microsoft ≫ Exchange Server Version2019 Updatecumulative_update_9
03.11.2021: CISA Known Exploited Vulnerabilities (KEV) Catalog
Microsoft Exchange Server Security Feature Bypass Vulnerability
VulnerabilityMicrosoft Exchange Server contains an unspecified vulnerability that allows for security feature bypass.
DescriptionApply updates per vendor instructions.
Required actions| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 93.87% | 0.999 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 6.5 | 8 | 6.4 |
AV:N/AC:L/Au:S/C:P/I:P/A:P
|
| nvd@nist.gov | 6.6 | 0.7 | 5.9 |
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
|
| secure@microsoft.com | 6.6 | 0.7 | 5.9 |
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
|
CWE-434 Unrestricted Upload of File with Dangerous Type
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.