What it is
CVE-2024-20399 is Cisco NX-OS Software CLI Command Injection Vulnerability. A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated user in possession of Administrator credentials to execute...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2024-20399
Cisco NX-OS Software CLI Command Injection Vulnerability
Cisco / Cisco NX-OS Software · 6.0\(2\)a6\(1\)
- Severity
- CVSS 6.0 · Medium
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 4.3%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
Cisco / Cisco NX-OS Software 6.0\(2\)a6\(1\).
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
Cisco NX-OS Software CLI Command Injection Vulnerability
A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated user in possession of Administrator credentials to execute arbitrary commands as root on the underlying operating system of an affected device.
This vulnerability is due to insufficient validation of arguments that are passed to specific configuration CLI commands. An attacker could exploit this vulnerability by including crafted input as the argument of an affected configuration CLI command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with the privileges of root. Note: To successfully exploit this vulnerability on a Cisco NX-OS device, an attacker must have Administrator credentials. The following Cisco devices already allow administrative users to access the underlying operating system through the bash-shell feature, so, for these devices, this vulnerability does not grant any additional privileges:
Nexus 3000 Series Switches Nexus 7000 Series Switches that are running Cisco NX-OS Software releases 8.1(1) and later Nexus 9000 Series Switches in standalone NX-OS mode
Vendor
Product
Affected
Status
cisco
nx-os
8.4\(6\)
Affected
cisco
nx-os
8.4\(6a\)
Affected
cisco
nx-os
8.4\(7\)
Affected
cisco
nx-os
8.4\(2f\)
Affected
cisco
nx-os
8.4\(8\)
Affected
cisco
nx-os
8.4\(9\)
Affected
cisco
nx-os
9.3\(1\)
Affected
cisco
nx-os
9.3\(2\)
Affected
cisco
nx-os
9.3\(3\)
Affected
cisco
nx-os
9.3\(4\)
Affected
cisco
nx-os
9.3\(5\)
Affected
cisco
nx-os
9.3\(6\)
Affected
cisco
nx-os
9.3\(7\)
Affected
cisco
nx-os
9.3\(7a\)
Affected
cisco
nx-os
9.3\(8\)
Affected
cisco
nx-os
9.3\(9\)
Affected
cisco
nx-os
9.3\(10\)
Affected
cisco
nx-os
9.3\(11\)
Affected
cisco
nx-os
9.3\(2a\)
Affected
cisco
nx-os
9.3\(12\)
Affected
cisco
nx-os
9.3\(13\)
Affected
cisco
nx-os
7.3\(6\)N1\(1\)
Affected
cisco
nx-os
7.3\(5\)D1\(1\)
Affected
cisco
nx-os
7.3\(7\)N1\(1\)
Affected
cisco
nx-os
7.3\(7\)N1\(1a\)
Affected
- Published
- 01 Jul 2024
- Exploitation Reported
- 02 Jul 2024
- Attack vector
- Local
- Complexity
- Low
- Privileges
- High
- User interaction
- None
Tags
windows
cisa
nessus_scanner
edge
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2024-20399
- cisco-sa-nxos-cmd-injection-xD9OhyOP sec.cloudapps.cisco.com · CVE Record https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurity...
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
CISA
Independent exploitation attestation added to the KEV Intelligence record.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2024-07-02 00:00 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
Nessus template detected 02 Jun 2025.
View Nessus template (opens in new tab)Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →Scanner Artifacts
Scanner and exploit-framework references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nessus | https://www.tenable.com/plugins/nessus/502292 | 02 Jun 2025 |
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
6.0
Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
EPSS
4.3%
Timeline
From disclosure to observed exploitation
-
Nessus plugin available
Scanner coverage available
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
CVE published
Vulnerability disclosed publicly
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2024-20399
Free JSON includes basic KEV fields{
"cve_id": "CVE-2024-20399",
"confidence": "Confirmed",
"cvss_score": 6.0,
"cvss_estimated": false,
"epss_score": 0.04306,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.