The current version of watchOS is 27 (as of 14/09/2026). patchletter checks the official source daily and emails you new releases.
Actively exploited vulnerabilities
The US cybersecurity agency CISA lists these vulnerabilities in its catalog of Known Exploited Vulnerabilities. What CISA does not carry does not appear in this list — even where it is being exploited.
- CVE-2020-9818Apple iOS, iPadOS, and watchOS Out-of-Bounds Write Vulnerability
8.8 high · over the network, without login, needs user action · CISA deadline was 3 May 22
- CVE-2023-41061Apple iOS, iPadOS, and watchOS Wallet Code Execution Vulnerability
7.8 high · locally only, without login, needs user action · CISA deadline was 2 Oct 23
- CVE-2021-31010Apple iOS, macOS, watchOS Sandbox Bypass Vulnerability
7.5 high · over the network, without login · CISA deadline was 15 Sept 22
- CVE-2021-1879Apple iOS, iPadOS, and watchOS WebKit Cross-Site Scripting (XSS) Vulnerability
6.1 medium · over the network, without login, needs user action · CISA deadline was 17 Nov 21
- CVE-2020-9819Apple iOS, iPadOS, and watchOS Memory Corruption Vulnerability
4.3 medium · over the network, without login, needs user action · CISA deadline was 3 May 22
Source: CISA KEV. The CVE is matched to the product automatically — when in doubt, the linked NVD entry applies.
watchOS at a glance
watchOS ships annually in step with iOS and is delivered through the paired iPhone. That makes enterprise patching awkward: the watch only updates when it is charging, connected and sufficiently full — there is no practical equivalent to a forced iPhone rollout.
It matters wherever watches are used for work: time tracking, healthcare, manufacturing, plus unlocking a Mac as a second factor. watchOS vulnerabilities are typically fixed alongside iOS, so a shared maintenance window for both platforms is the sensible approach.
For fleet planning the iOS rule applies again: older watch generations stop receiving the current major and remain on a branch that will eventually be retired.
Support cycles (endoflife.date)
| Cycle | Latest version | Status |
|---|---|---|
| 27 | 27 | supported |
| 26 | 26.6 | End of Life |
| 11 | 11.6.2 | End of Life |
| 10 | 10.6.2 | End of Life |
| 9 | 9.6.4 | End of Life |
| 8 | 8.8.2 | End of Life |
| 7 | 7.6.2 | End of Life |
| 6 | 6.3.1 | End of Life |
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 27 | STABLE | 14/09/2026 | – |
| 26.6 | STABLE | 27/07/2026 | – |
Frequently asked questions
- What is the latest version of watchOS?
- watchOS 27, released 14/09/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the watchOS release notes?
- The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
- How do I get notified about new watchOS updates?
- Tick watchOS off in the catalogue and leave your address. From then on new versions go out by email — one at a time, or bundled in the daily or weekly digest.
An email as soon as a new watchOS version ships
We reconcile the vendor source daily. When a new version appears, it lands in your inbox right away or bundled as a digest. The update email is free and ends with one click. Alerts about vulnerabilities and end of support are part of patchletter Pro.
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The badge shows the current watchOS version and keeps it up to date. Anyone may embed it, no account needed.
[](https://patchletter.com/en/software/watchos)https://patchletter.com/badge/watchos.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
