Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC · Version Status
Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC End of Life Date
Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC end-of-life date, support status, and CVE risk. Dates read at the vendor's own lifecycle pages (cisco.com); the source of each date is on the product page.
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Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC is actively supported. EOL date: January 31, 2032.
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EOL Date
Jan 31, 2032
1932 days remaining
Latest Release
Catalyst C8500-12X4QC
Standard release
Release Date
—
Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC series
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in 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 ISR and Catalyst 8000 edge routers (hardware) Versions
| Version | Latest | EOL Date | Status |
|---|
| ISR 4451 |
ISR 4451 |
Nov 30, 2028 |
Active |
| ISR 4431 |
ISR 4431 |
Nov 30, 2028 |
Active |
| ISR 4351 |
ISR 4351 |
Nov 30, 2028 |
Active |
| ISR 4331 |
ISR 4331 |
Nov 30, 2028 |
Active |
| ISR 4321 |
ISR 4321 |
Nov 30, 2028 |
Active |
| ISR 4221 |
ISR 4221 |
Nov 30, 2028 |
Active |
| ISR 4461 |
ISR 4461 |
Jan 31, 2030 |
Active |
| ISR1100X-6G |
ISR1100X-6G |
Jul 31, 2031 |
Active |
What does Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC end of life mean?
When Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC 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 Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8200-1N-4T or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC reach end of life?
Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC reaches end of life on January 31, 2032. That is 1932 days remaining.
Is Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC still supported?
Yes, Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC is currently supported. The EOL date is January 31, 2032.
What should I upgrade to from Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC?
What are the security risks of running Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC past EOL?
When Cisco ISR and Catalyst 8000 edge routers (hardware) Catalyst C8500-12X4QC reaches end of life, the maintainers stop issuing 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 Cisco ISR and Catalyst 8000 edge routers (hardware) should migrate immediately or implement compensating controls.