LineageOS 21 · Version Status
LineageOS 21 End of Life Date
LineageOS 21 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.
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LineageOS 21 is past end of life. This version no longer receives security patches. 393 days past EOL — migrate to a supported version immediately.
EOL Date
Oct 12, 2025
393 days past EOL
Latest Release
—
Standard release
Release Date
Feb 14, 2024
LineageOS 21 series
Where these dates come from
End of lifeOct 12, 2025endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees ReleaseFeb 14, 2024endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees Confidence: high = two or more independent sources agree (the vendor's page read by our adapter, a person's check against the vendor, the dataset the date came from); medium = one; low = the vendor page disagrees or our last read is stale.
How we source dates.
Lifecycle detail
LineageOS 21 was released on February 14, 2024 and support ended on October 12, 2025 — a supported lifespan of 1 year and 8 months, shorter than the 2 years median for LineageOS releases. It has been past its end-of-life date for 1 year and 1 month. 2 newer LineageOS releases have shipped since.
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 →
| Version | Latest | EOL Date | Status |
|---|
| 13.0 |
— |
Feb 12, 2018 |
EOL |
| 14.1 |
— |
Feb 25, 2019 |
EOL |
| 15.1 |
— |
Feb 28, 2020 |
EOL |
| 16.0 |
— |
Feb 16, 2021 |
EOL |
| 17.1 |
— |
Apr 26, 2022 |
EOL |
| 18.1 |
— |
Mar 5, 2024 |
EOL |
| 19 |
— |
Feb 14, 2024 |
EOL |
| 20 |
— |
Dec 31, 2024 |
EOL |
What does LineageOS 21 end of life mean?
When LineageOS 21 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 LineageOS 21 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to LineageOS 24.0 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does LineageOS 21 reach end of life?
LineageOS 21 reached end of life on October 12, 2025. This version is no longer receiving security patches.
Is LineageOS 21 still supported?
No. LineageOS 21 reached end of life on October 12, 2025 and is no longer receiving security patches.
What should I upgrade to from LineageOS 21?
The recommended upgrade from LineageOS 21 is
LineageOS 24.0 — the latest actively supported version. Check the
LineageOS full timeline for all supported versions.
What are the security risks of running LineageOS 21 past EOL?
Since LineageOS 21 reached end of life, the maintainers no longer issue security patches. Any CVEs disclosed after the EOL date accumulate with no vendor fix. A CVE-based scan does not show this — it is the CVE blind spot; some scanners flag unsupported versions of common products, but coverage varies and none give the date in advance. Organizations running EOL LineageOS should migrate immediately or implement compensating controls.