Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1606)
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-77.
Summary
A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system of an affected device. The vulnerability is due to insufficient validation of arguments passed to certain CLI commands. An attacker could exploit this vulnerability by including malicious input as the argument of an affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with elevated privileges. An attacker would need valid user credentials to exploit this vulnerability. Nexus 3000, 3500, and Nexus 9000 Series Switches in Standalone NX-OS Mode are affected in versions prior to 7.0(3)I7(4).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Nexus 9000 Series Switches in Standalone NX-OS Mode | before 7.0(3)I7(4) | 7.0(3)I7(4) | Patch available | CNA |
| Cisco | Nexus 3000 Series Switches | before 7.0(3)I7(4) | 7.0(3)I7(4) | Patch available | CNA |
| Cisco | Nexus 3500 Platform Switches | before 7.0(3)I7(4) | 7.0(3)I7(4) | Patch available | CNA |
- Nexus 9000 Series Switches in Standalone NX-OS Mode VendorCisco Affected before 7.0(3)I7(4) Fixed in 7.0(3)I7(4) Patch available CNA
- Nexus 3000 Series Switches VendorCisco Affected before 7.0(3)I7(4) Fixed in 7.0(3)I7(4) Patch available CNA
- Nexus 3500 Platform Switches VendorCisco Affected before 7.0(3)I7(4) Fixed in 7.0(3)I7(4) Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* | 7.0\(3\)i7 to before 7.0\(3\)i7\(4\) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:nexus_9000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* | 7.0\(3\) to before 7.0\(3\)i7\(4\) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)i7 to before 7.0\(3\)i7\(4\) Vulnerable ·Cisco
- cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:nexus_9000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\) to before 7.0\(3\)i7\(4\) Vulnerable ·Cisco
- cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
- Fix · CNA Nexus 9000 Series Switches in Standalone NX-OS Mode (Cisco) Fixed in 7.0(3)I7(4)
- Fix · CNA Nexus 3000 Series Switches (Cisco) Fixed in 7.0(3)I7(4)
- Fix · CNA Nexus 3500 Platform Switches (Cisco) Fixed in 7.0(3)I7(4)
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Cisco Nexus 3000 Series Switches, Nexus 3500 Platform Switches 7.0(3)I7(4)
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2019-01231 Cisco NX-OS Software Privilege Escalation VulnerabilityPriority LOW 36
- TI-2019-01230 Cisco NX-OS Software Privilege Escalation VulnerabilityPriority LOW 36
- TI-2019-01229 Cisco NX-OS Software Privilege Escalation VulnerabilityPriority LOW 36
Timeline
- 2026-10-02 Threatist record created from CVE-2019-1606
- 2026-10-03 Alias added: GHSA-f98f-97pg-74wc
More Cisco Nx-os vulnerabilities
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2024-13332 Cisco NX-OS Software CLI Command Injection Vulnerability KEVCVSS 3.1MEDIUM 6.7
- TI-2018-00260 Improper input validation in Cisco NX-OS unknown CVSS 3.0CRITICAL 9.8
- TI-2019-01226 Cisco NX-OS Software Netstack Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2022-05183 Cisco NX-OS Software Cisco Fabric Services Over IP Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2022-05182 Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vulnerability CVSS 3.1HIGH 8.6
Sources
- CVE-2019-1606 · CVE Program
- CVE-2019-1606 · NVD
- FIRST EPSS
- GHSA-f98f-97pg-74wc · GitHub Advisory Database · CC BY 4.0
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