CVE-2021-26427

Microsoft Exchange Server Remote Code Execution Vulnerability
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9 CRITICAL
ADJACENT_NETWORK
LOW
LOW
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
microsoftCNA
9 CRITICAL
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 66%
VendorProductVersion
microsoftexchange_server
15.1.0.0 ≤
𝑥
< 15.1.2375.12
microsoftexchange_server
15.2.0.0 ≤
𝑥
< 15.2.986.9
microsoftexchange_server
15.0.0.0 ≤
𝑥
< 15.0.1497.24
microsoftexchange_server
15.1.0.0 ≤
𝑥
< 15.1.2308.15
microsoftexchange_server
15.2.0.0 ≤
𝑥
< 15.2.922.14
𝑥
= Vulnerable software versions
References
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26427
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26427