NX-OS 3.x
NX-OS-3.x
Os Release
· Cisco NX-OS software Series
Is NX-OS 3.x still maintained?
No. Cisco no longer maintains NX-OS 3.x; support ended 2015-07-04. It receives no fixes of any kind, including security patches. Devices running it are unpatched against any newer vulnerability — plan an upgrade to a maintained release. See Cisco's lifecycle bulletin.
When do security fixes for NX-OS 3.x stop?
Cisco has not published an end-of-engineering date for NX-OS 3.x.
What should I upgrade NX-OS 3.x to?
Upgrade to a currently maintained Cisco release. Check the release-train table on the vendor page for the nearest supported version.
What known-exploited CVEs apply to the NX-OS 3.x past end of support?
1 CVE in CISA's Known Exploited Vulnerabilities catalog affect Cisco NX-OS. Because NX-OS 3.x is past end of engineering, it will not receive fixes for them — a device left on this release is exploitable with no patch available. Upgrade to a maintained release. See the Known Exploited Vulnerabilities table below for the full list.
Known Exploited Vulnerabilities
This device is past Cisco's security-support date. 1 CVE in CISA's Known Exploited Vulnerabilities catalog apply to the platform it runs. Cisco is not issuing patches for this model. Isolate, compensate, or refresh.
| CVE | KEV added | Vulnerability | Flags |
|---|---|---|---|
CVE-2024-20399
|
Cisco NX-OS Command Injection Vulnerability |
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.
NX-OS 3.x Release Lifecycle
NX-OS 3.x is a Cisco Cisco NX-OS software software release. Releases are maintained on a fixed schedule: Cisco ships fixes and security patches until the release reaches end of engineering, after which a device must be upgraded to a maintained release to stay patchable. The dates below are milestones for the software train, not for any specific appliance — hardware running this release has its own separate lifecycle. This product has reached end of life as of , meaning Cisco no longer provides technical support, software updates, or hardware replacement for this product. It was last available for purchase on . Organizations still running the NX-OS 3.x should plan a migration .
Lifecycle Milestones
| Lifecycle notice published | 16y 10mo ago | |
|---|---|---|
| End of sale | 16y 4mo ago | |
| Last order date | 16y 1mo ago | |
| End of software maintenance | 15y 4mo ago | |
| Last date of support | 11y 4mo ago |