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Exchange Server 15.2.2562.45
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15.2.2562.43β15.2.2562.45SecurityBug fix
β¦ Editor's summary
Exchange Server SE Jul26SU (15.2.2562.45) is the July 2026 Security Update that addresses newly disclosed Exchange Server vulnerabilities, including a critical remote code execution issue. The update also allows administrators to remove the temporary mitigation for CVE-2026-42897 after installation and includes additional reliability improvements.
β Security impact
- Addresses multiple Exchange Server security vulnerabilities, including a critical remote code execution (RCE) vulnerability.
- Includes cumulative security fixes identified by Microsoft and external security researchers.
- Allows administrators to safely remove the temporary mitigation for CVE-2026-42897 after installing the July 2026 Security Update.
- Microsoft recommends immediate installation on all supported Exchange Server SE deployments.
What's new
- Updated Exchange Server Subscription Edition to version 15.2.2562.45.
- Installed the July 2026 Security Update (Jul26SU).
- Fixed multiple Exchange Server security vulnerabilities, including a critical remote code execution issue.
- Added support for removing the temporary mitigation previously required for CVE-2026-42897 after the update is installed.
- Included cumulative security, reliability, and servicing improvements.
- Recommended for all supported Exchange Server SE deployments.
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