Samsung Mobile Galaxy S21 Ultra 5G End of Life Date
Samsung Mobile Galaxy S21 Ultra 5G end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
Samsung Mobile galaxy-s21-ultra-5g was released on January 29, 2021 and support ended on February 21, 2026 — a supported lifespan of 5 years and 1 month, longer than the 4 years median for Samsung Mobile releases. It has been without security patches for 6 months. 6 newer Samsung Mobile releases have shipped since.
| Version | Latest | EOL Date | Status |
|---|---|---|---|
| Galaxy Gear | — | Supported | EOL |
| Galaxy Note Pro 12.2 | — | Supported | EOL |
| Galaxy Grand Neo | — | Supported | EOL |
| Galaxy Note 3 Neo | — | Supported | EOL |
| Galaxy Note 3 Neo Duos | — | Supported | EOL |
| Galaxy Note Pro 12.2 3G | — | Supported | EOL |
| Galaxy Note Pro 12.2 LTE | — | Supported | EOL |
| I8200 Galaxy S III mini VE | — | Supported | EOL |
What does Samsung Mobile Galaxy S21 Ultra 5G end of life mean?
When Samsung Mobile Galaxy S21 Ultra 5G 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 Samsung Mobile Galaxy S21 Ultra 5G past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Samsung Mobile Galaxy A57 5G or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.