Watchos 4 · Version Status
Watchos 4 End of Life Date
Watchos 4 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Watchos 4 is past end of life. This version no longer receives security patches. 2791 days past EOL — migrate to a supported version immediately.
EOL Date
Sep 17, 2018
2791 days past EOL
Latest Release
4.3.2
Standard release
Release Date
Sep 19, 2017
Watchos 4 series
| Version | Latest | EOL Date | Status |
|---|
| 3 |
3.2.3 |
Sep 19, 2017 |
EOL |
| → 4 |
4.3.2 |
Sep 17, 2018 |
EOL |
| 5 |
5.3.10 |
Sep 19, 2019 |
EOL |
| 6 |
6.3.1 |
Sep 16, 2020 |
EOL |
| 7 |
7.6.2 |
Sep 20, 2021 |
EOL |
| 8 |
8.8.2 |
Sep 12, 2022 |
EOL |
| 9 |
9.6.4 |
Sep 18, 2023 |
EOL |
| 10 |
10.6.2 |
Sep 16, 2024 |
EOL |
What does Watchos 4 end of life mean?
When Watchos 4 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 Watchos 4 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Watchos 26 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Watchos 4 reach end of life?
Watchos 4 reached end of life on September 17, 2018. This version is no longer receiving security patches.
Is Watchos 4 still supported?
No. Watchos 4 reached end of life on September 17, 2018 and is no longer receiving security patches.
What should I upgrade to from Watchos 4?
The recommended upgrade from Watchos 4 is
Watchos 26 — the latest actively supported version. Check the
Watchos full timeline for all supported versions.
What are the security risks of running Watchos 4 past EOL?
When Watchos 4 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 Watchos should migrate immediately or implement compensating controls.