Is the QFX3500 and QFX3600 end of life?

Yes. The Juniper QFX3500 and QFX3600 has reached end of life. Vendor support ended on 2021-05-01.

When is the QFX3500 and QFX3600 end of sale date?

The Juniper QFX3500 and QFX3600 reached end of sale on 2016-05-01. The last date of vendor support is 2021-05-01.

When does Juniper support end for the QFX3500 and QFX3600?

Juniper support for the QFX3500 and QFX3600 ended on 2021-05-01.

Home/Juniper/QFX/QFX3500-48S4Q

QFX3500-48S4Q

Name: QFX3500 and QFX3600
Brand: Juniper
SKU: QFX3500-48S4Q
Availability: Discontinued

Announced in: QFX3500 and QFX3600

Juniper Chassis · QFX Series

Source: Official Juniper notice ↗ Verified 2026-04-14

QFX3500-48S4Q has reached end of life. Juniper support ended 2021-05-01. Last available for order 2016-05-01.

Known Exploited Vulnerabilities

This device is past Juniper's security-support date. 7 CVEs in CISA's Known Exploited Vulnerabilities catalog apply to the platform it runs. Juniper is not issuing patches for this model. Isolate, compensate, or refresh.

CVE	KEV added	Vulnerability
`CVE-2025-21590`	2025-03-13	Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability Advisory 1 Advisory 2
`CVE-2023-36844`	2023-11-13	Juniper Junos OS EX Series PHP External Variable Modification Vulnerability Advisory 1 Advisory 2
`CVE-2023-36845`	2023-11-13	Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability Advisory 1 Advisory 2
`CVE-2023-36846`	2023-11-13	Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability Advisory 1 Advisory 2
`CVE-2023-36847`	2023-11-13	Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability Advisory 1 Advisory 2
`CVE-2023-36851`	2023-11-13	Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability Advisory 1 Advisory 2
`CVE-2020-1631`	2022-03-25	Juniper Junos OS Path Traversal Vulnerability Advisory 1

Source: CISA Known Exploited Vulnerabilities catalog. The Ransomware flag reflects CISA's own knownRansomwareCampaignUse field, set when the CVE has been observed in ransomware campaigns per their threat intel. It's not a property of the vulnerability description itself.

Correlation is at the platform level, not per-OS-version. Not exhaustive: KEV only lists actively-exploited CVEs and many relevant unexploited vulnerabilities are not here. Verify against vendor security advisories (PSIRT, JSA, PAN-SA) and NVD before acting. See compensating controls if refresh isn't immediate.

Announced 2015-11-01

End of Sale 2016-05-01

End of Support 2021-05-01

QFX3500-48S4Q Lifecycle Overview

The Juniper QFX3500-48S4Q (QFX3500-48S4Q) is a chassis product in the Juniper QFX series. This product has reached end of life as of 2021-05-01, meaning Juniper no longer provides technical support, software updates, or hardware replacement for this product. It was last available for purchase on 2016-05-01. Organizations still running the QFX3500-48S4Q should plan a migration .

Lifecycle Milestones

Lifecycle notice published	2015-11-01	10y 6mo ago
End of sale	2016-05-01	9y 12mo ago
Last date of support	2021-05-01	4y 12mo ago

Additional Dates

Last Warranty Conversion Date	2017-05-01	8y 12mo ago
Same Day Support Discontinued Date	2018-05-01	7y 12mo ago
Next Day Support Discontinued Date	2020-05-01	5y 12mo ago

Applicable Platforms

QFX

QFX3500-48S4Q

Known Exploited Vulnerabilities

QFX3500-48S4Q Lifecycle Overview

Lifecycle Milestones

Additional Dates

Other QFX Series SKUs

Sunsetting around the same time