CVE-2019-1779· NVD / CVE Program· CNA cisco

Cisco FXOS and NX-OS Software Command Injection Vulnerability

Noroxi assessment

Priority: Monitor (action score 26/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.45% (FIRST EPSS).
Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.
Severity is disputed: the assigning authority (CNA) scores it 4.2, NVD 6.7.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

A vulnerability in the CLI of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system of an affected device with elevated privileges. The vulnerability is due to insufficient validation of arguments passed to certain CLI commands. An attacker could exploit this vulnerability by including malicious input as the argument of an affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with elevated privileges. An attacker would need valid device credentials to exploit this vulnerability.

MediumCVSS 6.7 · v3.1—No exploit No fix recorded

BDU:2019-02144

Published: May 15, 2019
Updated: Jun 16, 2026
EPSS: 0.5% · 37th percentile
CWE: CWE-77

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 26 / 40 · 6.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 6.7
CNA · cisco: 4.2; 2.5 point gap

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
cisco	firepower extensible operating system	cpe:2.3:o:cisco:firepower_extensible_operating_system
cisco	firepower 4110	cpe:2.3:h:cisco:firepower_4110
cisco	firepower 4112	cpe:2.3:h:cisco:firepower_4112
cisco	firepower 4115	cpe:2.3:h:cisco:firepower_4115
cisco	firepower 4120	cpe:2.3:h:cisco:firepower_4120
cisco	firepower 4125	cpe:2.3:h:cisco:firepower_4125
cisco	firepower 4140	cpe:2.3:h:cisco:firepower_4140
cisco	firepower 4145	cpe:2.3:h:cisco:firepower_4145
cisco	firepower 4150	cpe:2.3:h:cisco:firepower_4150
cisco	firepower 9300	cpe:2.3:h:cisco:firepower_9300
cisco	nx-os	cpe:2.3:o:cisco:nx-os
cisco	mds 9100	cpe:2.3:h:cisco:mds_9100

and 78 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

cisco firepower extensible operating systembefore 2.4.1.101
cisco nx-os5.2 and later · before 6.2\(25\)
cisco nx-os7.3 and later · before 8.1\(1b\)
cisco nx-os8.2 and later · before 8.3\(1\)
cisco nx-osbefore 7.0\(3\)i4\(9\)
cisco nx-os7.0\(3\)i7 and later · before 7.0\(3\)i7\(4\)
cisco nx-os7.0\(3\) and later · before 7.0\(3\)f3\(5\)
cisco nx-osbefore 7.3\(4\)n1\(1\)
cisco nx-osbefore 6.2\(22\)
cisco nx-os7.2 and later · before 7.3\(3\)d1\(1\)
cisco nx-os8.0 and later · before 8.3\(1\)

Versions reported by the vendor

Affected version ranges reported by the assigning authority (cisco). Independent of NVD's CPE analysis and usually ahead of it.

Cisco Cisco NX-OS Software
- unspecified and later · before 8.3(1)affected

Same product

cisco: all records

Other highest-scoring records for the same primary product.

CVE-2015-6435An unspecified CGI script in Cisco FX-OS before 1.1.2 on Firepower 9000 devices and Cisco Unified Computing System (UCS) Manager before 2.2(
42Plan
CVE-2020-3172Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service Vulnerability
36Monitor
CVE-2017-12277A vulnerability in the Smart Licensing Manager service of the Cisco Firepower 4100 Series Next-Generation Firewall (NGFW) and Firepower 9300
36Monitor
CVE-2020-3456Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability
35Monitor
CVE-2017-3883A vulnerability in the authentication, authorization, and accounting (AAA) implementation of Cisco Firepower Extensible Operating System (FX
35Monitor
CVE-2020-3517Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability
34Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).