Google Container-Optimized OS (COS) end of life dates
The support dates the endoflife.date record (community-maintained) holds for Google Container-Optimized OS (COS), read on 30 Sep 2026: when security support ends for each version (cycle), when active support ends, and extended support where the record shows it. Below them, what Cyber Essentials, the Essential Eight, CIS Controls v8, PCI DSS and NIST SP 800-53 ask of a version past its end.
- Oldest version still in support
- cos-121, security support to 1 Mar 2027
- Next end date
- cos-121, security support ends 1 Mar 2027
- Vendor's own notice
- the vendor lifecycle policy for Google Container-Optimized OS (COS), authoritative; each version below links its own notice where the record carries one
- Record
- Google Container-Optimized OS (COS)
- Kind
- operating system
- Versions in the record
- 16
- Versions past vendor support
- 13
- Essential Eight class
- an operating system: Patch operating systems asks that operating systems no longer supported by vendors are replaced, from ML1 (the held ML2 text carries the ML1 set).
- Source
- endoflife.date/cos, community-maintained, MIT licence, read 30 Sep 2026; sources
Google Container-Optimized OS (COS) versions and their support dates
as at 30 Sep 2026| Cycle | Released | Active support ends | Security support ends | Extended support ends | On the read date | Vendor notice | |
|---|---|---|---|---|---|---|---|
| cos-129 LTS | 21 May 2026 | not given separately | 1 Jul 2028 | none in the record | supported | none in the record | |
| cos-125 LTS | 9 Oct 2025 | not given separately | 1 Feb 2028 | none in the record | supported | none in the record | |
| cos-121 LTS | 14 Apr 2025 | not given separately | 1 Mar 2027 | none in the record | supported | none in the record | |
| cos-117 LTS | 2 Oct 2024 | not given separately | 1 Sep 2026 | none in the record | past vendor support | none in the record | |
| cos-113 LTS | 15 Apr 2024 | not given separately | 1 Mar 2026 | none in the record | past vendor support | none in the record | |
| cos-109 LTS | 27 Sep 2023 | not given separately | 1 Sep 2025 | none in the record | past vendor support | none in the record | |
| cos-105 LTS | 3 Apr 2023 | not given separately | 1 Mar 2025 | none in the record | past vendor support | none in the record | |
| cos-101 LTS | 15 Sep 2022 | not given separately | 1 Oct 2024 | none in the record | past vendor support | none in the record | |
| cos-97 LTS | 29 Mar 2022 | not given separately | 1 Apr 2024 | none in the record | past vendor support | none in the record | |
| cos-93 LTS | 18 Oct 2021 | not given separately | 1 Oct 2023 | none in the record | past vendor support | none in the record | |
| cos-89 LTS | 7 Apr 2021 | not given separately | 1 Mar 2023 | none in the record | past vendor support | none in the record | |
| cos-85 LTS | 24 Sep 2020 | not given separately | 1 Sep 2022 | none in the record | past vendor support | none in the record | |
| cos-81 LTS | 27 Mar 2020 | not given separately | 10 Jan 2022 | none in the record | past vendor support | none in the record | |
| cos-77 LTS | 27 Sep 2019 | not given separately | 1 Apr 2021 | none in the record | past vendor support | none in the record | |
| cos-73 LTS | 25 Mar 2019 | not given separately | 1 Jun 2020 | none in the record | past vendor support | none in the record | |
| cos-69 LTS | 18 Sep 2018 | not given separately | 1 Dec 2019 | none in the record | past vendor support | none in the record |
A version this table does not list is not in the record: the finder reads it as unknown, never supported. The dates are the record's own; nothing here states a date the record does not hold.
What the schemes ask of a version past its end
- Cyber Essentials
- software on in-scope devices licensed and supported by the vendor, meaning it still receives security updates; unsupported software removed or segregated (SU.1, SU.4). Cyber Essentials Plus: removed, or isolated with compensating controls (PM-02).
- Essential Eight
- An operating system: Patch operating systems asks that operating systems no longer supported by vendors are replaced, from ML1 (the held ML2 text carries the ML1 set).
- CIS Controls v8, Safeguard 2.2
- only software that still receives vendor support may be marked authorised; unsupported software kept for the mission needs a recorded exception with compensating controls and the acceptance of the remaining risk; support status checked at least monthly.
- PCI DSS 12.3.4
- hardware and software reviewed at least every 12 months: that vendors still supply timely security fixes, end-of-life announcements documented, and a remediation plan for outdated technology approved by senior management.
- NIST SP 800-53 SA-22
- system components replaced when support is no longer available from the developer, vendor or manufacturer, or alternative sources of continued support provided.