Cisco IOS XE 17.3

end of lifeno security fixes since 2023-09-30

Cisco IOS XE 17.3 reached end of life 3 years ago.

Supported now: Cisco IOS XE 17.12 (LTS until 2027-09-30), Cisco IOS XE 17.15 (LTS until 2028-09-30), Cisco IOS XE 17.18 (LTS until 2029-08-08), Cisco IOS XE 26.1 (no announced date)

Facts

Released
(6 years ago)
Active support ended
(3 years ago)
Security support ended
(3 years ago)
LTS
yes
Source
endoflife.date (checked 2026-09-09)

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