CVE-2019-1734 | Cisco FXOS and NX-OS Software Sensitive File Read Information Disclosure Vulnerability

A vulnerability in the implementation of a CLI diagnostic command in Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to view sensitive system files that should be restricted. The attacker could use this information to conduct additional reconnaissance attacks. The vulnerability is due to incomplete role-based access control (RBAC) verification. An attacker could exploit this vulnerability by authenticating to the device and issuing a specific CLI diagnostic command with crafted user-input parameters. An exploit could allow the attacker to perform an arbitrary read of a file on the device, and the file may contain sensitive information. The attacker needs valid device credentials to exploit this vulnerability.

Published: 2019-11-05 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-1734 is rated Low Risk (29.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.31%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-1734

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.20% 0.31% +0.11%
2 2025-11-21 0.06% 0.20% +0.14%
3 2025-11-18 — 0.06% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-1734

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]
5.5 3.0 MEDIUM
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2019-1734

Affected software / configurations for CVE-2019-1734

Vendor Product Version Raw CPE
cisco firepower_extensible_operating_system < 2.2.2.91 cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:*
cisco firepower_extensible_operating_system >= 2.3, < 2.3.1.111 cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:*
cisco firepower_extensible_operating_system >= 2.4, < 2.4.1.101 cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:*
cisco nx-os < 6.2\(7\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os < 7.0\(3\)i4\(9\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os >= 7.0\(3\)i7, < 7.0\(3\)i7\(6\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os < 6.0\(2\)a4\(1\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os >= 7.0\(3\)i4, < 7.0\(3\)i4\(9\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os >= 7.0\(3\), < 7.0\(3\)f3\(5\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os < 7.1\(4\)n1\(1\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os >= 7.2, < 7.3\(0\)n1\(1\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os < 6.2\(6\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nx-os < 4.0\(1a\) cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*

References for CVE-2019-1734

cvelogic Threat Intelligence