Msexchange 4.0 · Version Status
Msexchange 4.0 End of Life Date
Msexchange 4.0 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Msexchange 4.0 is actively supported. EOL date: Supported indefinitely.
EOL Date
Supported indefinitely
Supported
Latest Release
4.0.996
Standard release
Release Date
Jun 11, 1996
Msexchange 4.0 series
| Version | Latest | EOL Date | Status |
|---|
| → 4.0 |
4.0.996 |
Supported |
Active |
| 5.0 |
5.0.1460 |
Jan 10, 2006 |
EOL |
| 5.5 |
5.5.2653 |
Jan 10, 2006 |
EOL |
| 2000 |
6.0.6620.7 |
Jan 11, 2011 |
EOL |
| 2003 |
6.5.7654.4 |
Apr 8, 2014 |
EOL |
| 2007 |
8.3.517.0 |
Apr 11, 2017 |
EOL |
| 2010 |
14.3.513.0 |
Oct 13, 2020 |
EOL |
| 2013 |
15.0.1497.48 |
Apr 11, 2023 |
EOL |
What does Msexchange 4.0 end of life mean?
When Msexchange 4.0 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Msexchange 4.0 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Msexchange subscription or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Msexchange 4.0 reach end of life?
Msexchange 4.0 has no scheduled end-of-life date and is supported indefinitely.
Is Msexchange 4.0 still supported?
Yes, Msexchange 4.0 is currently supported. The EOL date is Supported indefinitely.
What should I upgrade to from Msexchange 4.0?
The recommended upgrade from Msexchange 4.0 is
Msexchange subscription — the latest actively supported version. Check the
Msexchange full timeline for all supported versions.
What are the security risks of running Msexchange 4.0 past EOL?
When Msexchange 4.0 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Msexchange should migrate immediately or implement compensating controls.