Microsoft Exchange 2019 CU15 SU8
Microsoft Exchange 2019 CU15 SU8
The Microsoft Exchange 2019 CU15 SU8 reached end of service life on Nov 1, 2026 — Microsoft no longer ships security patches or fixes for it. Our third-party support keeps it safe to run: 24/7 engineers manage issues, remediate vulnerabilities, and help you maintain compliance.
24/7 engineers own your Microsoft Exchange 2019 CU15 SU8 incidents end to end.
Mitigation and patch-around guidance when the vendor no longer ships fixes.
Controls evidence and documentation that keep auditors satisfied.
Specifications
- product
- msexchange
- release
- 2019
- product Label
- Microsoft Exchange
- release Label
- 2019 CU15 SU5
- codename
- lts
- latest Version
- 15.2.1544.36
- release Date
- 2018-10-22
- maintained
- source Url
- https://endoflife.date/msexchange
Lifecycle Dates
- End of Service Life
- Nov 1, 2026
- Last OEM Support
- Jan 9, 2024
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for Microsoft Exchange 2019 CU15 SU8 — monitoring, break/fix, vulnerability work, operations and compliance, before and after EOSL.
| Feature | OEM Support | 3rd Party Support |
|---|---|---|
| Post-EOSL Support | ||
| Break/Fix Support | Until EOSL | |
| 24/7 Monitoring | ||
| Vulnerability Scanning & Remediation | ||
| Managed Operations | ||
| Procedure & Configuration Review | ||
| Compliance & Audit Documentation | Limited | |
| Discounted Migration to Other Platforms |
Why Choose 3rd Party Support for Microsoft Exchange 2019 CU15 SU8?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for Microsoft Exchange 2019 CU15 SU8 when the vendor no longer ships fixes.
Compliance Maintenance
Procedure review, controls evidence and the documentation auditors ask for — maintained continuously, not scrambled at audit time.
24/7 Expert Support
Engineers who know this release monitor, manage and fix issues around the clock — break/fix to managed operations.
Microsoft Exchange 2019 CU15 SU8 Support: Frequently Asked Questions
Is the Microsoft Exchange 2019 CU15 SU8 still supported?
Microsoft ended support for the Microsoft Exchange 2019 CU15 SU8 on Nov 1, 2026 — no more patches or fixes from the vendor. Third-party support keeps it covered: our engineers manage issues, remediate vulnerabilities, and help you maintain compliance for as long as you run it.
When is the Microsoft Exchange 2019 CU15 SU8 end of service life (EOSL) date?
Microsoft lists the end of service life for the Microsoft Exchange 2019 CU15 SU8 as Nov 1, 2026.
Can I keep using the Microsoft Exchange 2019 CU15 SU8 after its EOSL date?
Yes. EOSL means Microsoft stops issuing patches and support — the software itself keeps running. Third-party support covers it from there: issue management, security vulnerability remediation, and the compliance documentation auditors ask for, for as long as you choose to run it.
How much does third-party support for the Microsoft Exchange 2019 CU15 SU8 cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location. You get an indicative price within 24 hours and a firm quote within 48.
Known Vulnerabilities Affecting Microsoft Exchange 2019 CU15 SU8
148 published CVEs affect the Microsoft Exchange 2019 CU15 SU8, including 109 rated critical or high severity. Microsoft no longer ships security patches for this release — our engineers provide mitigation guidance, workarounds and hardening support.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2024-21410 | CRITICAL | 9.8 | Feb 13, 2024 | Microsoft Exchange Server Elevation of Privilege Vulnerability |
| CVE-2023-21709 | CRITICAL | 9.8 | Aug 8, 2023 | Microsoft Exchange Server Elevation of Privilege Vulnerability |
| CVE-2021-28481 | CRITICAL | 9.8 | Apr 13, 2021 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2021-28480 | CRITICAL | 9.8 | Apr 13, 2021 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2019-1373 | CRITICAL | 9.8 | Nov 12, 2019 | A remote code execution vulnerability exists in Microsoft Exchange through the deserialization of metadata via PowerShell, aka 'Microsoft Exchange Remote Code Execution Vulnerability'. |
| CVE-2019-0586 | CRITICAL | 9.8 | Jan 8, 2019 | A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka "Microsoft Exchange Memory Corruption Vulnerability." This affects Microsoft Exchange Server. |
| CVE-2026-55008 | CRITICAL | 9.6 | Jul 14, 2026 | Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. |
| CVE-2026-69356 | CRITICAL | 9.3 | Sep 8, 2026 | Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. |
| CVE-2026-69641 | CRITICAL | 9.1 | Sep 8, 2026 | Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network. |
| CVE-2021-34473 | CRITICAL | 9.1 | Jul 14, 2021 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2021-27078 | CRITICAL | 9.1 | Mar 3, 2021 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2021-26855 | CRITICAL | 9.1 | Mar 3, 2021 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2021-26412 | CRITICAL | 9.1 | Mar 3, 2021 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2020-17142 | CRITICAL | 9.1 | Dec 10, 2020 | Microsoft Exchange Remote Code Execution Vulnerability |
| CVE-2020-17132 | CRITICAL | 9.1 | Dec 10, 2020 | Microsoft Exchange Remote Code Execution Vulnerability |
| CVE-2022-21969 | CRITICAL | 9.0 | Jan 11, 2022 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2022-21855 | CRITICAL | 9.0 | Jan 11, 2022 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2022-21846 | CRITICAL | 9.0 | Jan 11, 2022 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2021-26427 | CRITICAL | 9.0 | Oct 13, 2021 | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2021-34523 | CRITICAL | 9.0 | Jul 14, 2021 | Microsoft Exchange Server Elevation of Privilege Vulnerability |
Showing the 20 most severe of 148 known CVEs.
Get Third Party SupportMicrosoft third-party software support
Third-party support replaces the Microsoft renewal for the versions you already own: 24x7 incident response, vulnerability mitigation and compliance documentation, typically 40-70% below the renewal.