Cisco IOS XR 25.4 · Version Status

Cisco IOS XR 25.4 End of Life Date

Cisco IOS XR 25.4 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.

✓ Cisco IOS XR 25.4 is actively supported. No end-of-life date has been announced yet.
EOL Date
TBD
Supported
Latest Release
25.4
Standard release
Release Date
—
Cisco IOS XR 25.4 series
← Cisco IOS XR 26.1 All Cisco IOS XR versions Cisco IOS XR 25.3 →
30 / 100
Medium Risk
EOL Risk Score™  How is this calculated? →
EOL Recency
0/40
Attack Surface
10/30 Medium tier
CISA KEV Exposure
20/20 Named in CISA KEV
Extended Support
0/10 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 →
All Cisco IOS XR Versions
VersionLatestEOL DateStatus
3.3 3.3 Dec 31, 2011 EOL
3.4 3.4 Dec 31, 2011 EOL
3.5 3.5 May 11, 2012 EOL
3.6 3.6 Jun 30, 2012 EOL
3.8 3.8 Dec 28, 2013 EOL
3.9 3.9 Apr 9, 2012 EOL
4.0 4.0 Oct 1, 2014 EOL
4.1 4.1 Mar 19, 2016 EOL

What does Cisco IOS XR 25.4 end of life mean?

When Cisco IOS XR 25.4 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 Cisco IOS XR 25.4 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.

Migrate to Cisco IOS XR 26.1 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.

Frequently Asked Questions
When does Cisco IOS XR 25.4 reach end of life?
Cisco IOS XR 25.4 has no announced end-of-life date yet — it is currently supported, with EOL to be determined.
Is Cisco IOS XR 25.4 still supported?
Yes, Cisco IOS XR 25.4 is currently supported. The EOL date is TBD.
What should I upgrade to from Cisco IOS XR 25.4?
The recommended upgrade from Cisco IOS XR 25.4 is Cisco IOS XR 26.1 — the latest actively supported version. Check the Cisco IOS XR full timeline for all supported versions.
What are the security risks of running Cisco IOS XR 25.4 past EOL?
When Cisco IOS XR 25.4 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Cisco IOS XR should migrate immediately or implement compensating controls.
Data from endoflife.date API · Generated at build time · How we source data →