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Fix CVE-2023-21529 - HIGH microsoft exchange server | CVEDatabase.com

Home MicrosoftCVE-2023-21529

High

8.8CVSS

CVE-2023-21529

Vendor:Microsoft

Published: 14 Feb 2023

Updated 1w ago

Generated remediation guidance and an executive summary. No account required.

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-502 · Insecure Deserialization

Metadata

Primary Vendor: MICROSOFT
Published: 2/14/2023
Last Modified: 4/14/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

microsoft : exchange_servermicrosoft : exchange_servermicrosoft : exchange_servermicrosoft : exchange_server

Remediation Guidance

Executive Summary

View on NIST NVD

Related reading

Use CWE-502, Microsoft vendor hub and Exchange Server product page to widen CVE-2023-21529 into its surrounding weakness, vendor, and product context.

Compare it with CVE-2025-59249, CVE-2025-53782 and CVE-2025-53786 for nearby disclosures in the same product family. Additional editorial context is available in Weekly Security Roundup: Navigating the April 2026 Threat Landscape and Critical Framework Exploits.