CVE-2019-1726

Cisco NX-OS Software CLI Bypass to Internal Service Vulnerability

HIGH

7.8

CVSS Score

Published: May 15, 2019 at 04:40 PM UTC

Updated: June 17, 2026 at 02:29 AM UTC

29 products affected across 1 vendorNx OSNexus 7000Nexus 7700

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Severity

HIGH7.8

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, local attacker to access internal services that should be restricted on an affected device, such as the NX-API. The vulnerability is due to insufficient validation of arguments passed to a certain CLI command. An attacker could exploit this vulnerability by including malicious input as the argument to the affected command. A successful exploit could allow the attacker to bypass intended restrictions and access internal services of the device. An attacker would need valid device credentials to exploit this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nx OS · Cisconpm

95%

v < 4.0(1d)v < 6.0(2)a8(11)v < 6.2(22)v < 6.2(25)v < 7.0(3)I7(3)v < 7.3(4)n1(1)v < 8.3(2)v < 9.2(1)5.2 ≤ v < 6.2(25)7.0(3) ≤ v < 7.0(3)i7(3)7.0(3)i7 ≤ v < 7.0(3)i7(3)7.2 ≤ v < 7.3(3)d1(1)7.3 ≤ v < 8.3(2)8.0 ≤ v < 8.3(2)

Affected range stops below 4.0(1d), so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0(2)a8(11), so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2(22), so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2(25), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0(3)i7(3), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(3)d1(1), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(4)n1(1), so it looks safe — our inference, not a vendor statement

Affected range stops below 8.3(2), so it looks safe — our inference, not a vendor statement

Affected range stops below 9.2(1), so it looks safe — our inference, not a vendor statement

cisco-mds-9000 (environment) · cisco-mds-9100 (environment) · cisco-mds-9200 (environment) · cisco-mds-9500 (environment) · cisco-mds-9700 (environment) · cisco-nexus-3000 (environment) · cisco-nexus-3100 (environment) · cisco-nexus-3100-z (environment) · cisco-nexus-3100v (environment) · cisco-nexus-3200 (environment) · cisco-nexus-3400 (environment) · cisco-nexus-3500 (environment) · cisco-nexus-3524-x (environment) · cisco-nexus-3524-xl (environment) · cisco-nexus-3548-x (environment) · cisco-nexus-3548-xl (environment) · cisco-nexus-3600 (environment) · cisco-nexus-5500 (environment) · cisco-nexus-5600 (environment) · cisco-nexus-6000 (environment) · cisco-nexus-7000 (environment) · cisco-nexus-7700 (environment) · cisco-nexus-9000 (environment) · cisco-nexus-9200 (environment) · cisco-nexus-9300 (environment) · cisco-nexus-9500 (environment) · cisco-ucs-6248up (environment) · cisco-ucs-6296up (environment)

Mds 9000 · Ciscodevice

80%

All versions

Mds 9100 · Ciscodevice

80%

All versions

Mds 9200 · Ciscodevice

80%

All versions

Mds 9500 · Ciscodevice

80%

All versions