VulnerabilityModified
CVE-2021-31198
Microsoft Exchange Server Remote Code Execution Vulnerability
HIGH 7.8EPSS 4.87%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Microsoft Exchange Server Remote Code Execution Vulnerability
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 4.87% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-94
- Affected
- microsoft/exchange server
- Source
- secure@microsoft.com
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31198Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-894/Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31198Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-894/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.