SteamOS 1 End of Life Date
SteamOS 1 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
SteamOS 1 was released on December 1, 2013 and support ended on November 2, 2015 — a supported lifespan of 1 year and 11 months. It has been without security patches for 10 years and 11 months. 1 newer SteamOS release has shipped since.
What does SteamOS 1 end of life mean?
When SteamOS 1 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: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running SteamOS 1 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to SteamOS 3 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.