CVE-2023-21529

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS 8.8 high · Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 · published 2023-02-14

Microsoft Exchange Server Remote Code Execution Vulnerability

NVD · CVE.org

Coverage 1 source

1. 2026-04-13 CISA Cybersecurity Advisories critical CISA Adds Seven Known Exploited Vulnerabilities to Catalog

   CISA adds 7 vulnerabilities to its Known Exploited Vulnerabilities Catalog due to active exploitation.

Mentioned with

CVE-2012-1854 CVE-2020-9715 CVE-2023-36424 CVE-2025-60710

Also covered

• CVE-2026-88771 A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands CVSS 9.5 · 4 articles · 2026-09-29
• CVE-2026-91191 Lantronix G520 Series Cellular Gateway Improper Verification of Cryptographic Signature CVSS 7.7 · 1 article · 2026-09-29
• CVE-2026-86950 Apple iOS and iPadOS CVSS 8.8 · 2 articles · 2026-09-29
• CVE-2026-84409 Lantronix G520 Series Cellular Gateway Cross-site Scripting CVSS 7.7 · 1 article · 2026-09-29
• CVE-2026-72510 Toptech TMS7 and TopHAT SQL Injection CVSS 8.5 · 1 article · 2026-09-29