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CVE-2019-1602

Cisco NX-OS Software Privilege Escalation Vulnerability

HIGH
7.8
CVSS Score
Published: March 8, 2019 at 07:00 PM UTC
Updated: June 17, 2026 at 02:28 AM UTC
6 products affected across 1 vendorNx OSNexus 9000Nexus 3000

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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A vulnerability in the filesystem permissions of Cisco NX-OS Software could allow an authenticated, local attacker to access sensitive data that could be used to elevate their privileges to administrator. The vulnerability is due to improper implementation of filesystem permissions. An attacker could exploit this vulnerability by logging in to the CLI of an affected device, accessing a specific file, and leveraging this information to authenticate to the NX-API server. A successful exploit could allow an attacker to make configuration changes as administrator. Note: NX-API is disabled by default. 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-Standalone 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).

Affected

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

Nx OS· Cisconpm
95%
7.0(3) ≤ v < 7.0(3)f3(5)7.0(3)f1 ≤ v < 7.0(3)f3(5)7.0(3)f3 ≤ v < 7.0(3)f3(5)7.0(3)i5 ≤ v < 7.0(3)i7(4)
Affected range stops below 7.0(3)f3(5), so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0(3)i7(4), so it looks safe — our inference, not a vendor statement
cisco-nexus-3000 (environment) · cisco-nexus-3500 (environment) · cisco-nexus-3600 (environment) · cisco-nexus-9000 (environment) · cisco-nexus-9500 (environment)
Nexus 3000· Cisco
60%
v < 7.0(3)I7(4)
Affected range stops below 7.0(3)I7(4), so it looks safe — our inference, not a vendor statement
Nexus 3500· Cisco
60%
v < 7.0(3)I7(4)
Affected range stops below 7.0(3)I7(4), so it looks safe — our inference, not a vendor statement
Nexus 3600· Cisco
60%
v < 7.0(3)F3(5)
Affected range stops below 7.0(3)F3(5), so it looks safe — our inference, not a vendor statement
Nexus 9000· Cisco
60%
v < 7.0(3)I7(4)
Affected range stops below 7.0(3)I7(4), so it looks safe — our inference, not a vendor statement
Nexus 9500· Cisco
60%
v < 7.0(3)F3(5)
Affected range stops below 7.0(3)F3(5), so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/107332
Vendor Advisoryx_refsource_CISCOPatch
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-escalation

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-264NVD-CWE-Other

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