CVE-2021-26854

Microsoft Exchange Server Remote Code Execution Vulnerability
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.6 MEDIUM
NETWORK
HIGH
HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 97.88%
Affected Products (NVD)
VendorProductVersion
microsoftexchange_server
15.1.0.0 ≤
𝑥
< 15.1.2176.9
microsoftexchange_server
15.2.0.0 ≤
𝑥
< 15.2.792.10
microsoftexchange_server
15.0.0.0 ≤
𝑥
< 15.0.1497.12
microsoftexchange_server
15.2.0.0 ≤
𝑥
< 15.2.721.13
microsoftexchange_server
15.1.0.0 ≤
𝑥
< 15.1.2106.13
𝑥
= Vulnerable software versions
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26854
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26854