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TI-2019-01223 Aliases CVE-2019-1596GHSA-gqv4-4m7f-x3p4

Cisco NX-OS Software Bash Shell Privilege Escalation Vulnerability

Priority LOW 36CWE-264Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-264.

Summary

A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level to root. The attacker must authenticate with valid user credentials. The vulnerability is due to incorrect permissions of a system executable. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level to root. Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected in versions prior to 7.0(3)I7(4). Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00334 26th percentileScored 2026-11-07
Fix Fixed Nexus 3000 Series Switches (Cisco): 7.0(3)I7(4)Nexus 3500 Platform Switches (Cisco): 7.0(3)I7(4)+3 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoNexus 3000 Series Switchesbefore 7.0(3)I7(4)7.0(3)I7(4)Patch availableCNA
CiscoNexus 3500 Platform Switchesbefore 7.0(3)I7(4)7.0(3)I7(4)Patch availableCNA
CiscoNexus 3600 Platform Switchesbefore 7.0(3)F3(5)7.0(3)F3(5)Patch availableCNA
CiscoNexus 9000 Series Switches in Standalone NX-OS Modebefore 7.0(3)I7(4)7.0(3)I7(4)Patch availableCNA
CiscoNexus 9500 R-Series Line Cards and Fabric Modulesbefore 7.0(3)F3(5)7.0(3)F3(5)Patch availableCNA
  • 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
  • Nexus 3600 Platform Switches VendorCisco Affected before 7.0(3)F3(5) Fixed in 7.0(3)F3(5) 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 9500 R-Series Line Cards and Fabric Modules VendorCisco Affected before 7.0(3)F3(5) Fixed in 7.0(3)F3(5) Patch available CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*before 7.0\(3\)i4\(9\); 7.0\(3\)i5 to before 7.0\(3\)i7\(4\)VulnerableCisco
cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*7.0\(3\)i7 to before 7.0\(3\)i7\(4\)VulnerableCisco
cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*7.0\(3\)f3\(1\) to before 7.0\(3\)f3\(5\)VulnerableCisco
cpe:2.3:h:cisco:nexus_3600:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:nexus_9000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:nexus_9500:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions before 7.0\(3\)i4\(9\); 7.0\(3\)i5 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:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)i7 to before 7.0\(3\)i7\(4\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)f3\(1\) to before 7.0\(3\)f3\(5\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:nexus_3600:-:*:*:*:*:*:*:* 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:h:cisco:nexus_9500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

  • 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)
  • Fix · CNA Nexus 3600 Platform Switches (Cisco) Fixed in 7.0(3)F3(5)
  • Fix · CNA Nexus 9000 Series Switches in Standalone NX-OS Mode (Cisco) Fixed in 7.0(3)I7(4)
  • Fix · CNA Nexus 9500 R-Series Line Cards and Fabric Modules (Cisco) Fixed in 7.0(3)F3(5)

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Cisco Nexus 3600 Platform Switches, Nexus 9500 R-Series Line Cards and Fabric Modules 7.0(3)F3(5)

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2019-01227 Cisco FXOS and NX-OS Software Unauthorized Directory Access VulnerabilityPriority LOW 23
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1596
  2. 2026-10-03 Alias added: GHSA-gqv4-4m7f-x3p4

References

Patch 1

  • 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
See all 274 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences