NX-OS 8.1
NX-OS-8.1
Os Release
· Cisco NX-OS software Series
Is NX-OS 8.1 still maintained?
For now. Cisco maintenance for NX-OS 8.1 ends on 2027-04-30, with engineering fixes (incl. security) stopping 2025-04-09. Schedule the upgrade before then. See Cisco's lifecycle bulletin.
When do security fixes for NX-OS 8.1 stop?
Engineering fixes for NX-OS 8.1 — including security patches — stop on 2025-04-09. After that date, a device on this release cannot be patched against newly disclosed vulnerabilities without upgrading, which is the point that matters for KEV exposure and compliance.
What should I upgrade NX-OS 8.1 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 8.1 past end of support?
1 CVE in CISA's Known Exploited Vulnerabilities catalog affect Cisco NX-OS. Because NX-OS 8.1 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 8.1 Release Lifecycle
NX-OS 8.1 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. Cisco support for this product is ending soon. The last date of support is . After that date, no further software updates, security patches, or hardware replacements will be provided.
Lifecycle Milestones
| Lifecycle notice published | 3y ago | |
|---|---|---|
| End of sale | 2y 6mo ago | |
| Last order date | 2y 3mo ago | |
| End of software maintenance | 1y 6mo ago | |
| End of security vulnerability support | 1y 6mo ago | |
| Last date of support | in 6mo |