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High severity7.5NVD Advisory· Published Oct 13, 2021· Updated Jun 17, 2026

CVE-2021-34453

CVE-2021-34453

Description

Microsoft Exchange Server Denial of Service Vulnerability

Affected products

5

Microsoft/Exchange Serverllm-fuzzy5 versions
(expand)+ 4 more
- (no CPE)
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_21:*:*:*:*:*:*
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_22:*:*:*:*:*:*
- cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_10:*:*:*:*:*:*
- cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_11:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34453nvdPatchVendor Advisory

News mentions

0

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