The current version of Container-Optimized OS is cos-129-19506-448-8 (as of 31/08/2026). patchletter checks the official source daily and emails you new releases.
BSI security advisories
Advisories the German BSI (CERT-Bund) published for this product. Whether your version is affected is stated in the advisory itself.
- Golang Go: Mehrere Schwachstellen
WID-SEC-W-2026-0129 · 4 Sept
- Linux Kernel: Mehrere Schwachstellen
WID-SEC-W-2026-0809 · 4 Sept
- Linux Kernel: Mehrere Schwachstellen
WID-SEC-W-2026-0790 · 4 Sept
- Linux Kernel: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
WID-SEC-W-2026-1571 · 4 Sept
- Golang Go: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff
WID-SEC-W-2026-0548 · 4 Sept
- Linux Kernel (Fragnesia): Schwachstelle ermöglicht Erlangen von Administratorrechten
WID-SEC-W-2026-1530 · 4 Sept
- Golang Go: Mehrere Schwachstellen
WID-SEC-W-2026-0345 · 4 Sept
- Linux Kernel: Mehrere Schwachstellen
WID-SEC-W-2026-0614 · 4 Sept
Support cycles (endoflife.date)
| Cycle | Latest version | Status |
|---|---|---|
| cos-129LTS | cos-129-19506-448-8 | EOL 1 Mar 28 |
| cos-125LTS | cos-125-19216-655-6 | EOL 1 Sept 27 |
| cos-121LTS | cos-121-18867-584-3 | EOL 1 Mar 27 |
| cos-117LTS | cos-117-18613-731-2 | End of Life |
| cos-113LTS | cos-113-18244-582-104 | End of Life |
| cos-109LTS | cos-109-17800-570-50 | End of Life |
| cos-105LTS | cos-105-17412-535-98 | End of Life |
| cos-101LTS | cos-101-17162-528-64 | End of Life |
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| cos-129-19506-448-8 | LTS | 31/08/2026 | – |
| cos-129-19506-299-161 | LTS | 24/08/2026 | – |
| cos-129-19506-299-148 | LTS | 19/08/2026 | – |
| cos-129-19506-299-137 | LTS | 17/08/2026 | – |
| cos-129-19506-299-116 | LTS | 11/08/2026 | – |
| cos-129-19506-299-82 | LTS | 04/08/2026 | – |
| cos-129-19506-299-60 | LTS | 28/07/2026 | – |
| cos-129-19506-299-36 | LTS | 20/07/2026 | – |
| cos-129-19506-299-20 | LTS | 13/07/2026 | – |
Frequently asked questions
- What is the latest version of Container-Optimized OS?
- Container-Optimized OS cos-129-19506-448-8, released 31/08/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the Container-Optimized OS 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 Container-Optimized OS updates?
- Tick Container-Optimized OS 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 Container-Optimized OS version ships
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[](https://patchletter.com/en/software/container-optimized-os)https://patchletter.com/badge/container-optimized-os.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
