NVD / CVE Program· CNA cisco

CVE-2024-20399: Cisco NX-OS Software CLI Command Injection Vulnerability

Noroxi assessment

Priority: Plan (action score 57/100)

CISA has confirmed exploitation in the wild (Jul 2, 2024). Remediation deadline for US federal agencies: Jul 23, 2024.
Probability of exploitation in the next 30 days: 4.3% (FIRST EPSS); higher than 91.1% of all records.
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.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Add it to your regular patch cycle. 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

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated user in possession of Administrator credentials to execute arbitrary commands as root on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of arguments that are passed to specific configuration CLI commands. An attacker could exploit this vulnerability by including crafted input as the argument of an affected configuration CLI command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with the privileges of root. Note: To successfully exploit this vulnerability on a Cisco NX-OS device, an attacker must have Administrator credentials. The following Cisco devices already allow administrative users to access the underlying operating system through the bash-shell feature, so, for these devices, this vulnerability does not grant any additional privileges: Nexus 3000 Series Switches Nexus 7000 Series Switches that are running Cisco NX-OS Software releases 8.1(1) and later Nexus 9000 Series Switches in standalone NX-OS mode

MediumCVSS 6.7 · v3.1KEVWeaponized No fix recorded

BDU:2024-04937

Published: Jul 1, 2024
Updated: Jun 17, 2026
EPSS: 4.3% · 91th percentile
CWE: CWE-78

Report tools

JSON

Action score

Plan

Add it to your regular patch cycle.

CVSS: 26 / 40 · 6.7 / 10
CISA KEV: 30 / 30 · Listed
EPSS: 1 / 30 · 4.3%

CISA SSVC decision

Exploitation: active
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 6.7
CNA · cisco: 6.0; 0.7 point gap

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

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

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Jul 2, 2024. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Jul 23, 2024.

Get told when this record changes

In CISA KEV: exploitation in the wild confirmed
Weaponized exploit exists
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	nx-os	cpe:2.3:o:cisco:nx-os
cisco	nexus 7000	cpe:2.3:h:cisco:nexus_7000
cisco	nexus 7000 10-slot	cpe:2.3:h:cisco:nexus_7000_10-slot
cisco	nexus 7000 18-slot	cpe:2.3:h:cisco:nexus_7000_18-slot
cisco	nexus 7000 4-slot	cpe:2.3:h:cisco:nexus_7000_4-slot
cisco	nexus 7000 9-slot	cpe:2.3:h:cisco:nexus_7000_9-slot
cisco	nexus 7000 supervisor 1	cpe:2.3:h:cisco:nexus_7000_supervisor_1
cisco	nexus 7000 supervisor 2	cpe:2.3:h:cisco:nexus_7000_supervisor_2
cisco	nexus 7000 supervisor 2e	cpe:2.3:h:cisco:nexus_7000_supervisor_2e
cisco	nexus 7004	cpe:2.3:h:cisco:nexus_7004
cisco	nexus 7009	cpe:2.3:h:cisco:nexus_7009
cisco	nexus 7010	cpe:2.3:h:cisco:nexus_7010

and 188 more

Affected versions

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

cisco nx-os10.1(1)
cisco nx-os10.1(2)
cisco nx-os10.2(1)
cisco nx-os10.2(1q)
cisco nx-os10.2(2)
cisco nx-os10.2(3)
cisco nx-os10.2(4)
cisco nx-os10.2(5)
cisco nx-os10.2(6)
cisco nx-os10.2(7)
cisco nx-os10.2(8)
cisco nx-os10.3(1)
cisco nx-os10.3(2)
cisco nx-os10.3(3)
cisco nx-os10.3(4a)
cisco nx-os10.3(5)
cisco nx-os10.3(99w)
cisco nx-os10.3(99x)
cisco nx-os10.4(1)
cisco nx-os10.4(2)

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
- 8.2(5), 7.3(6)N1(1a), 7.3(5)D1(1), 8.4(2), 7.3(6)N1(1), 6.2(2), 8.4(3), 9.2(3), 7.0(3)I5(2), 8.2(1), 6.0(2)A8(7a), 7.0(3)I4(5) … (+28)affected

Same product

cisco: all records

Other highest-scoring records for the same primary product.

CVE-2018-0301A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to craft a packet to the manag
44Plan
CVE-2016-1453Buffer overflow in the Overlay Transport Virtualization (OTV) GRE feature in Cisco NX-OS 5.0 through 7.3 on Nexus 7000 and 7700 devices allo
41Plan
CVE-2018-0310A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remot
40Plan

Published before and after this one in the same product

← EarlierCVE-2024-20291Feb 28, 2024 · A vulnerability in the access control list (ACL) programming for port channel subinterfaces of Cisco Nexus 3000 and 9000 Series Switches in
23Monitor
← EarlierCVE-2024-20321Feb 28, 2024 · A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote
34Monitor
Later →CVE-2024-20284Aug 28, 2024 · Cisco NX-OS Software Python Parser Escape Vulnerability
35Monitor

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

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Proof-of-concept repository on GitHub	stars:0	2026-06-17

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.

PublishedJul 1, 2024
CISA KEVJul 2, 2024same day
First PoCJun 17, 2026+715 d
TodayNov 5, 2026+857 d

No history yet (it accumulates with the daily EPSS job).

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.

CVE-2023-20050494 days apartCisco NX-OS Software CLI Command Injection Vulnerability
31Monitor

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-24-0856 · Jul 2, 2024(Cisco NX-OS Güvenlik Bildirimi)

All national notices →

Technical details

Attack conditions

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.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: High
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const host = req.body.host;
2exec("ping -c 1 " + host, onResult);

Fixed

1const host = req.body.host;
2if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);
3execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cmd-injection-xD9OhyOP

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records