Container-Optimized OS cos-129 · Version Status
Container-Optimized OS cos-129 End of Life Date
Container-Optimized OS cos-129 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Container-Optimized OS cos-129 is actively supported. EOL date: March 1, 2028.
📅 Get reminded before Container-Optimized OS cos-129 reaches EOL on March 1, 2028 — alerts 90, 30 & 7 days out.
EOL Date
Mar 1, 2028
630 days remaining
Latest Release
cos-129-19506-224-7
LTS release
Release Date
May 21, 2026
Container-Optimized OS cos-129 series
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
10/10 None available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
All Container-Optimized OS Versions
| Version | Latest | EOL Date | Status |
|---|
| cos-69 LTS |
cos-69-10895-385-0 |
Dec 1, 2019 |
EOL |
| cos-73 LTS |
cos-73-11647-656-0 |
Sep 5, 2020 |
EOL |
| cos-77 LTS |
cos-77-12371-1109-0 |
Apr 1, 2021 |
EOL |
| cos-81 LTS |
cos-81-12871-1317-8 |
Jan 10, 2022 |
EOL |
| cos-85 LTS |
cos-85-13310-1498-13 |
Sep 1, 2022 |
EOL |
| cos-89 LTS |
cos-89-16108-798-22 |
Mar 1, 2023 |
EOL |
| cos-93 LTS |
cos-93-16623-461-42 |
Oct 24, 2023 |
EOL |
| cos-97 LTS |
cos-97-16919-450-41 |
Mar 27, 2024 |
EOL |
What does Container-Optimized OS cos-129 end of life mean?
When Container-Optimized OS cos-129 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 Container-Optimized OS cos-129 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Container-Optimized OS cos-129 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Container-Optimized OS cos-129 reach end of life?
Container-Optimized OS cos-129 reached end of life on March 1, 2028. That is 630 days remaining.
Is Container-Optimized OS cos-129 still supported?
Yes, Container-Optimized OS cos-129 is currently supported. The EOL date is March 1, 2028.
What should I upgrade to from Container-Optimized OS cos-129?
The recommended upgrade from Container-Optimized OS cos-129 is
Container-Optimized OS cos-129 — the latest actively supported version. Check the
Container-Optimized OS full timeline for all supported versions.
What are the security risks of running Container-Optimized OS cos-129 past EOL?
When Container-Optimized OS cos-129 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 Container-Optimized OS should migrate immediately or implement compensating controls.