Summary iPlain-English security verdict for NX-OS, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
NX-OS currently scores 0/100 — critical, with active exploitation. 2 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2023-44487. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
Disclosure trend iNew CVEs published for NX-OS each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2023-44487 HIGH exploited Uncontrolled resource consumption EPSS 100% → fixed in 10.4\(2\) CVE-2024-20399 MEDIUM exploited OS command injection EPSS 4% → see advisory CVE-2018-0301 CRITICAL Improper input validation EPSS 18% → fixed in 8.1\(1\) CVE-2016-1453 CRITICAL Memory corruption EPSS 8% → see advisory CVE-2018-0310 CRITICAL CWE-399 EPSS 4% → see advisory CVE-2021-1361 CRITICAL CWE-552 EPSS 2% → see advisory CVE-2016-1341 CRITICAL CWE-255 EPSS 1% → see advisoryGet alerted about NX-OS
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Frequently asked
Is NX-OS safe and patched?
NX-OS currently scores 0/100 — critical, with active exploitation. 2 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2023-44487. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
What should I do about NX-OS now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against Cisco's official advisory. Some issues are under active exploitation, so treat this as urgent.
Why is NX-OS listed on IsItPatched?
NX-OS was added automatically because CISA's Known Exploited Vulnerabilities (KEV) catalog flagged it as actively exploited in the wild. IsItPatched tracks its known CVEs, severity (CVSS), exploitation probability (EPSS) and KEV status from public data; its version and lifecycle mapping is verified over time.
lifecycle unknown — needs latest supported version
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Cisco's official advisory before you patch or upgrade.