CVE-2024-20399

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.043 · 91 %ileexploit · PoCDEEURUUS
grimoire priorityP0 · Act now
Exploitable?
Yes · in the wild
CISA KEV · 1 exploit · PoC
Likely / severe?
4.31% (91st) EPSS
CVSS 6.7 · medium
Is it mine?
1,146 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2024-07-02remediate by 2024-07-23

required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

EPSS · scored 2026-10-26

Cisco NX-OS Command Injection Vulnerability

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

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

6.7
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.7mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.8 · impact 5.9
v3.16mediumAV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU
v3.16mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU
v3.16mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Nsecondary · psirt@cisco.com USexploitability 0.8 · impact 5.2
v3.16.7mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)
v3.16mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Nsecondary · Cisco PSIRT US
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-78US
04

ATT&CK techniques

ATT&CK techniques this enables or maps to.

05

exploits (1)

Public proof-of-concept and weaponised exploit code.

06

affected products (1,146)

Products and version ranges known to be affected.

showing 20 of 1,146
07

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2024-1491Cisco NX-OS: Schwachstelle ermöglicht Ausführen von beliebigem ProgrammcodeDeutsch2024-07-01csaf · cert_bundDE

    Ein lokaler Angreifer kann eine Schwachstelle in Cisco NX-OS ausnutzen, um beliebigen Programmcode mit root Rechten auszuführen.

  • cisco-sa-nxos-cmd-injection-xD9OhyOPCisco NX-OS Software CLI Command Injection Vulnerability2024-07-01csaf · cisco_csafUS

    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 Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

08

also known as (4)

Other names and identifiers for this entity.

09

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundcisco_csafNVDCVE.orgMITRE
published 2024-07-01modified 2026-06-17
11

references (7)

External citations — patches, advisories, analysis.

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