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TI-2019-01459 Aliases CVE-2019-1836GHSA-3pmp-7vwx-87p3

Path traversal in Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode

Priority LOW 32CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the system shell for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an authenticated, local attacker to use symbolic links to overwrite system files. These system files may be sensitive and should not be overwritable by non-root users. The attacker would need valid device credentials. The vulnerability is due to incorrect symbolic link verification of directory paths when they are used in the system shell. An attacker could exploit this vulnerability by authenticating to the device and providing crafted user input to specific symbolic link CLI commands. Successful exploitation could allow the attacker to overwrite system files that should be restricted. This vulnerability has been fixed in software version 14.1(1i).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00438 38th percentileScored 2026-11-07
Fix Fixed Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode (Cisco): 14.1(1i)

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

VendorProductAffected versionsFixed inStatusSource
CiscoCisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Modebefore 14.1(1i)14.1(1i)Patch availableCNA
  • Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode VendorCisco Affected before 14.1(1i) Fixed in 14.1(1i) Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:cisco:nx-os:14.0\(3d\):*:*:*:*:*:*:*14.0(3d)VulnerableCisco
cpe:2.3:h:cisco:nexus_9300:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:nexus_9500:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:nx-os:14.0\(3d\):*:*:*:*:*:*:* Versions 14.0(3d) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:nexus_9300:-:*:*:*:*:*:*:* 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 Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode (Cisco) Fixed in 14.1(1i)

Fixed in the same release

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

  • Release ·

    Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode 14.1(1i)

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-01217 Improper certificate validation in Cisco NX-OS Software for Nexus 9000 Series Fabric…Priority LOW 39
    • TI-2019-01426 Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Root Privilege Escalation VulnerabilityPriority LOW 32
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1836
  2. 2026-10-03 Alias added: GHSA-3pmp-7vwx-87p3

References

Advisory 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