End of life
Juniper Networks Junos OS 12.3X54
All published support, including security fixes, has ended. The published end-of-support date was 2018-07-18 — 2935 days ago.
Scope: software releaseAs of 2026-08-01
Lifecycle timeline
- 2018-01-18 — End of active support · End of maintenance
- 2018-07-18 — End of support · End of standard support
Why this status?
FRS 2014-07-18. Source 'Release Type' column: EEOL (Juniper's own EEOL/EOL classification; status field above is derived independently from the End of Support date).
Junos OS releases still inside the support window
- Junos OS 25.4 — support ends 2031-06-22
- Junos OS 25.2 — support ends 2030-12-30
- Junos OS 24.4 — support ends 2030-06-29
- Junos OS 24.2 — support ends 2030-01-19
Reported as still supported by the cited source. Juniper documents the upgrade path for your edition and contract — confirm there before planning change work.
Evidence
- Junos OS Dates & Milestones Official · checked 2026-07-15
- End of Life Products and Milestones (hardware/product family selector) Official · checked 2026-07-15
- SRX Series EOL Dates & Milestones Official · checked 2026-07-15
- M Series (M, MX) EOL Dates & Milestones Official · checked 2026-07-15
- EX Series EOL Dates & Milestones Official · checked 2026-07-15
- QFX Series EOL Dates & Milestones Official · checked 2026-07-15
- Junos Space Dates & Milestones Official · checked 2026-07-15
- STRM / JSA Dates & Milestones Official · checked 2026-07-15
- Session Smart Router Dates & Milestones Official · checked 2026-07-15
- Juniper end-of-life policy Official · checked 2026-07-15
Keep going
- All Juniper Junos OS lifecycle dates· 60 tracked releases
- Juniper Junos OS security advisories· 28 tracked
- Free CVE email alerts for Juniper
Status derived deterministically from the published milestones. When a vendor does not publish a date, this page says so — it never guesses.