VulnerabilityModified
CVE-2021-26427
Microsoft Exchange Server Remote Code Execution Vulnerability
CRITICAL 9.0EPSS 0.89%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.89%). 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
- 9.0 CRITICALCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.89% probability · 57th percentile
- CISA KEV
- Not listed
- Affected
- microsoft/exchange server
- Source
- secure@microsoft.com
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26427Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26427Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.