CVE-2019-1727

Cisco NX-OS Software Python Parser Privilege Escalation Vulnerability

MEDIUM

6.7

CVSS Score

Published: May 15, 2019 at 04:45 PM UTC

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

27 products affected across 1 vendorNx OSNexus 7000Nexus 7700

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Severity

MEDIUM6.7

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

A vulnerability in the Python scripting subsystem of Cisco NX-OS Software could allow an authenticated, local attacker to escape the Python parser and issue arbitrary commands to elevate the attacker's privilege level. The vulnerability is due to insufficient sanitization of user-supplied parameters that are passed to certain Python functions in the scripting sandbox of the affected device. An attacker could exploit this vulnerability to escape the scripting sandbox and execute arbitrary commands to elevate the attacker's privilege level. To exploit this vulnerability, the attacker must have local access and be authenticated to the targeted device with administrative or Python execution privileges. These requirements could limit the possibility of a successful exploit.

Affected

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

Nx OS · Cisconpm

95%

v < 6.2(25)v < 7.0(3)I7(3)v < 8.3(2)v < 9.2(1)5.2 ≤ v < 8.1(1b)6.2 ≤ v < 7.3(3)d1(1)7.0(3)i4 ≤ v < 7.0(3)i4(8)7.0(3)i5 ≤ v < 7.0(3)i7(3)7.3 ≤ v < 7.3(4)n1(1)8.0 ≤ v < 8.3(1)8.2 ≤ v < 8.3(1)

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

Affected range stops below 7.0(3)i4(8), 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 8.1(1b), so it looks safe — our inference, not a vendor statement

Affected range stops below 8.3(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)

Mds 9000 · Ciscodevice

80%

All versions

Mds 9100 · Ciscodevice

80%

All versions

Mds 9200 · Ciscodevice

80%

All versions

Mds 9500 · Ciscodevice

80%

All versions