CVE-2024-20397 - Vulnerability Details

- Cisco NX-OS Software Image Verification Bypass Vulnerability

Description

A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification. 

This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.

Published: 2024-12-04

Score: 5.2 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco NX-OS Software

unknown

Version	Status	Constraints
`8.2(5)`	affected	—
`7.3(5)D1(1)`	affected	—
`8.4(2)`	affected	—
`8.4(3)`	affected	—
`9.2(3)`	affected	—
`7.0(3)I5(2)`	affected	—
`8.2(1)`	affected	—
`6.0(2)A8(7a)`	affected	—
`7.0(3)I4(5)`	affected	—
`7.3(1)D1(1)`	affected	—
`7.0(3)I4(6)`	affected	—
`7.0(3)I4(3)`	affected	—
`9.2(2v)`	affected	—
`7.3(0)D1(1)`	affected	—
`7.0(3)I4(7)`	affected	—
`7.0(3)I4(1)`	affected	—
`7.0(3)I4(8)`	affected	—
`7.0(3)I4(2)`	affected	—
`6.0(2)A8(11)`	affected	—
`7.3(4)D1(1)`	affected	—
`9.2(1)`	affected	—
`9.2(2t)`	affected	—
`9.2(3y)`	affected	—
`7.0(3)I4(1t)`	affected	—
`7.0(3)I7(6z)`	affected	—
`9.3(2)`	affected	—
`7.3(1)DY(1)`	affected	—
`7.0(3)F3(3)`	affected	—
`7.0(3)I7(3z)`	affected	—
`7.0(3)IM7(2)`	affected	—
`6.0(2)A8(11b)`	affected	—
`7.0(3)I7(5a)`	affected	—
`8.1(1)`	affected	—
`7.0(3)I6(1)`	affected	—
`8.2(2)`	affected	—
`7.0(3)I5(3b)`	affected	—
`8.3(2)`	affected	—
`7.3(2)D1(3a)`	affected	—
`9.2(4)`	affected	—
`6.0(2)A8(10)`	affected	—
`6.0(2)A8(2)`	affected	—
`7.0(3)IC4(4)`	affected	—
`8.1(2)`	affected	—
`7.0(3)F3(3c)`	affected	—
`7.3(3)D1(1)`	affected	—
`7.0(3)F3(1)`	affected	—
`7.0(3)F3(5)`	affected	—
`8.2(3)`	affected	—
`7.0(3)I7(2)`	affected	—
`7.0(3)I5(3)`	affected	—
`7.0(3)I7(3)`	affected	—
`6.0(2)A8(6)`	affected	—
`7.0(3)I6(2)`	affected	—
`8.3(1)`	affected	—
`8.4(1)`	affected	—
`8.1(1b)`	affected	—
`6.0(2)A8(5)`	affected	—
`7.3(0)DX(1)`	affected	—
`7.3(2)D1(1)`	affected	—
`9.3(1)`	affected	—
`6.0(2)A8(7)`	affected	—
`7.0(3)I7(6)`	affected	—
`7.3(2)D1(2)`	affected	—
`6.0(2)A8(11a)`	affected	—
`7.0(3)I4(8z)`	affected	—
`7.0(3)I4(9)`	affected	—
`8.2(4)`	affected	—
`7.0(3)I7(4)`	affected	—
`7.0(3)I7(7)`	affected	—
`7.3(0)DY(1)`	affected	—
`6.0(2)A8(9)`	affected	—
`6.0(2)A8(1)`	affected	—
`6.0(2)A8(10a)`	affected	—
`7.0(3)I5(1)`	affected	—
`9.3(1z)`	affected	—
`9.2(2)`	affected	—
`7.0(3)F3(4)`	affected	—
`7.0(3)I4(8b)`	affected	—
`8.1(2a)`	affected	—
`7.3(2)D1(3)`	affected	—
`6.0(2)A8(3)`	affected	—
`7.0(3)I4(6t)`	affected	—
`7.0(3)I5(3a)`	affected	—
`8.1(1a)`	affected	—
`6.0(2)A8(8)`	affected	—
`7.0(3)I7(5)`	affected	—
`7.0(3)F3(3a)`	affected	—
`6.0(2)A8(4)`	affected	—
`7.0(3)I4(8a)`	affected	—
`7.0(3)F3(2)`	affected	—
`7.0(3)I4(4)`	affected	—
`7.0(3)I7(1)`	affected	—
`7.0(3)IA7(2)`	affected	—
`7.0(3)IA7(1)`	affected	—
`6.0(2)A8(7b)`	affected	—
`6.0(2)A8(4a)`	affected	—
`8.4(1a)`	affected	—
`9.3(3)`	affected	—
`7.3(2)D1(1d)`	affected	—
`7.0(3)I7(8)`	affected	—
`9.3(4)`	affected	—
`7.3(6)D1(1)`	affected	—
`8.2(6)`	affected	—
`9.3(5)`	affected	—
`8.4(2a)`	affected	—
`8.4(2b)`	affected	—
`7.0(3)I7(9)`	affected	—
`8.5(1)`	affected	—
`9.3(6)`	affected	—
`10.1(2)`	affected	—
`10.1(1)`	affected	—
`8.4(4)`	affected	—
`7.3(7)D1(1)`	affected	—
`8.4(2c)`	affected	—
`9.3(5w)`	affected	—
`8.2(7)`	affected	—
`9.3(7)`	affected	—
`9.3(7k)`	affected	—
`7.0(3)I7(9w)`	affected	—
`10.2(1)`	affected	—
`7.3(8)D1(1)`	affected	—
`9.3(7a)`	affected	—
`8.2(7a)`	affected	—
`9.3(8)`	affected	—
`8.4(4a)`	affected	—
`8.4(2d)`	affected	—
`8.4(5)`	affected	—
`7.0(3)I7(10)`	affected	—
`8.2(8)`	affected	—
`10.2(1q)`	affected	—
`10.2(2)`	affected	—
`9.3(9)`	affected	—
`10.1(2t)`	affected	—
`7.3(9)D1(1)`	affected	—
`10.2(3)`	affected	—
`8.4(6)`	affected	—
`10.2(3t)`	affected	—
`8.4(2e)`	affected	—
`9.3(10)`	affected	—
`10.2(2a)`	affected	—
`9.2(1a)`	affected	—
`8.2(9)`	affected	—
`10.3(1)`	affected	—
`10.2(4)`	affected	—
`8.4(7)`	affected	—
`10.3(2)`	affected	—
`8.4(6a)`	affected	—
`9.3(11)`	affected	—
`10.3(3)`	affected	—
`10.2(5)`	affected	—
`9.4(1)`	affected	—
`9.3(2a)`	affected	—
`8.4(2f)`	affected	—
`8.2(10)`	affected	—
`9.3(12)`	affected	—
`10.2(3v)`	affected	—
`10.4(1)`	affected	—
`8.4(8)`	affected	—
`10.3(99w)`	affected	—
`10.2(6)`	affected	—
`10.3(3w)`	affected	—
`10.3(99x)`	affected	—
`10.3(3o)`	affected	—
`8.4(9)`	affected	—
`10.3(4)`	affected	—
`10.3(3p)`	affected	—
`10.3(4a)`	affected	—
`9.4(1a)`	affected	—
`10.4(2)`	affected	—
`10.3(3q)`	affected	—
`9.3(13)`	affected	—
`8.2(11)`	affected	—
`10.3(5)`	affected	—
`10.2(7)`	affected	—
`10.4(3)`	affected	—
`10.3(3x)`	affected	—
`10.3(4g)`	affected	—
`10.5(1)`	affected	—
`10.2(8)`	affected	—
`10.3(3r)`	affected	—
`10.3(6)`	affected	—
`9.3(14)`	affected	—
`10.4(4)`	affected	—
`10.3(4h)`	affected	—
`10.4(4g)`	affected	—

Cisco

Cisco NX-OS System Software in ACI Mode

unknown

Version	Status	Constraints
`14.1(1j)`	affected	—
`14.0(3d)`	affected	—
`14.1(1k)`	affected	—
`13.2(1m)`	affected	—
`14.0(3c)`	affected	—
`13.2(2l)`	affected	—
`13.2(7k)`	affected	—
`14.1(1l)`	affected	—
`14.2(2f)`	affected	—
`13.2(3s)`	affected	—
`13.2(2o)`	affected	—
`14.0(2c)`	affected	—
`14.1(2m)`	affected	—
`13.2(5e)`	affected	—
`14.1(2o)`	affected	—
`13.2(7f)`	affected	—
`13.2(41d)`	affected	—
`13.2(4d)`	affected	—
`13.2(3o)`	affected	—
`13.2(1l)`	affected	—
`14.0(1h)`	affected	—
`13.2(3n)`	affected	—
`14.2(1l)`	affected	—
`14.2(2e)`	affected	—
`13.2(4e)`	affected	—
`14.2(1i)`	affected	—
`13.2(9b)`	affected	—
`14.1(2s)`	affected	—
`14.1(1i)`	affected	—
`14.1(2g)`	affected	—
`13.2(3j)`	affected	—
`13.2(5d)`	affected	—
`13.2(6i)`	affected	—
`14.1(2u)`	affected	—
`13.2(3i)`	affected	—
`13.2(3r)`	affected	—
`13.2(5f)`	affected	—
`14.2(1j)`	affected	—
`14.1(2w)`	affected	—
`14.2(3n)`	affected	—
`14.2(3l)`	affected	—
`14.2(3j)`	affected	—
`14.2(2g)`	affected	—
`13.2(8d)`	affected	—
`14.1(2x)`	affected	—
`13.2(9f)`	affected	—
`14.2(3q)`	affected	—
`14.2(4i)`	affected	—
`13.2(9h)`	affected	—
`15.0(1k)`	affected	—
`14.2(4k)`	affected	—
`15.0(1l)`	affected	—
`15.0(2e)`	affected	—
`14.2(4o)`	affected	—
`14.2(4p)`	affected	—
`15.0(2h)`	affected	—
`14.2(5k)`	affected	—
`14.2(5l)`	affected	—
`14.2(5n)`	affected	—
`15.1(1h)`	affected	—
`14.2(6d)`	affected	—
`15.1(2e)`	affected	—
`14.2(6g)`	affected	—
`14.2(6h)`	affected	—
`15.1(3e)`	affected	—
`13.2(10e)`	affected	—
`14.2(6l)`	affected	—
`14.2(7f)`	affected	—
`15.1(4c)`	affected	—
`14.2(6o)`	affected	—
`15.2(1g)`	affected	—
`15.2(2e)`	affected	—
`14.2(7l)`	affected	—
`13.2(10f)`	affected	—
`15.2(2f)`	affected	—
`15.2(2g)`	affected	—
`14.2(7q)`	affected	—
`15.2(2h)`	affected	—
`15.2(3f)`	affected	—
`15.2(3e)`	affected	—
`15.2(3g)`	affected	—
`14.2(7r)`	affected	—
`14.2(7s)`	affected	—
`15.2(4d)`	affected	—
`15.2(4e)`	affected	—
`14.2(7t)`	affected	—
`15.2(5c)`	affected	—
`15.2(5d)`	affected	—
`13.2(10g)`	affected	—
`16.0(1g)`	affected	—
`14.2(7u)`	affected	—
`15.2(5e)`	affected	—
`15.2(4f)`	affected	—
`15.2(6e)`	affected	—
`15.2(6h)`	affected	—
`16.0(1j)`	affected	—
`15.2(6g)`	affected	—
`15.2(7f)`	affected	—
`14.2(7v)`	affected	—
`15.2(7g)`	affected	—
`16.0(2h)`	affected	—
`14.2(7w)`	affected	—
`15.2(8d)`	affected	—
`16.0(2j)`	affected	—
`15.2(8e)`	affected	—
`16.0(3d)`	affected	—
`16.0(3e)`	affected	—
`15.2(8f)`	affected	—
`15.2(8g)`	affected	—
`15.3(1d)`	affected	—
`15.2(8h)`	affected	—
`16.0(4c)`	affected	—
`15.3(2a)`	affected	—
`15.2(8i)`	affected	—
`16.0(5h)`	affected	—
`15.3(2b)`	affected	—
`16.0(3g)`	affected	—
`16.0(5j)`	affected	—
`15.3(2c)`	affected	—
`16.0(6c)`	affected	—
`15.3(2d)`	affected	—
`16.1(1f)`	affected	—
`16.0(7e)`	affected	—
`16.0(8e)`	affected	—
`15.3(2e)`	affected	—

Cisco

Cisco Unified Computing System (Managed)

unknown

Version	Status	Constraints
`4.0(4c)`	affected	—
`4.0(2b)`	affected	—
`4.1(2a)`	affected	—
`4.0(1a)`	affected	—
`4.0(2a)`	affected	—
`4.0(1b)`	affected	—
`4.1(1c)`	affected	—
`4.0(4a)`	affected	—
`4.0(4b)`	affected	—
`4.0(2e)`	affected	—
`4.1(1a)`	affected	—
`4.0(4d)`	affected	—
`4.0(4h)`	affected	—
`4.0(4g)`	affected	—
`4.0(1d)`	affected	—
`4.1(1e)`	affected	—
`4.0(4f)`	affected	—
`4.0(4e)`	affected	—
`4.0(4i)`	affected	—
`4.1(1d)`	affected	—
`4.0(2d)`	affected	—
`4.1(1b)`	affected	—
`4.0(1c)`	affected	—
`4.1(2b)`	affected	—
`4.0(4k)`	affected	—
`4.1(3a)`	affected	—
`4.1(3b)`	affected	—
`4.1(2c)`	affected	—
`4.0(4l)`	affected	—
`4.1(4a)`	affected	—
`4.1(3c)`	affected	—
`4.1(3d)`	affected	—
`4.2(1c)`	affected	—
`4.2(1d)`	affected	—
`4.0(4m)`	affected	—
`4.1(3e)`	affected	—
`4.2(1f)`	affected	—
`4.1(3f)`	affected	—
`4.2(1i)`	affected	—
`4.1(3h)`	affected	—
`4.2(1k)`	affected	—
`4.2(1l)`	affected	—
`4.0(4n)`	affected	—
`4.2(1m)`	affected	—
`4.1(3i)`	affected	—
`4.2(2a)`	affected	—
`4.2(1n)`	affected	—
`4.1(3j)`	affected	—
`4.2(2c)`	affected	—
`4.2(2d)`	affected	—
`4.2(3b)`	affected	—
`4.1(3k)`	affected	—
`4.0(4o)`	affected	—
`4.2(2e)`	affected	—
`4.2(3d)`	affected	—
`4.2(3e)`	affected	—
`4.2(3g)`	affected	—
`4.1(3l)`	affected	—
`4.3(2b)`	affected	—
`4.2(3h)`	affected	—
`4.2(3i)`	affected	—
`4.3(2c)`	affected	—
`4.1(3m)`	affected	—
`4.3(2e)`	affected	—
`4.3(3a)`	affected	—
`4.2(3j)`	affected	—
`4.3(3c)`	affected	—
`4.2(3k)`	affected	—
`4.2(3l)`	affected	—
`4.3(2f)`	affected	—
`4.2(3m)`	affected	—

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2024-18112	A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification.  This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.

No CVSS v4.0

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00016.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-image-sig-bypas-pQDRQvjL

History

Wed, 05 Feb 2025 20:30:00 +0000

Type	Values Removed	Values Added
Description	A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification. This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.	A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification.  This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.

Wed, 04 Dec 2024 22:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 04 Dec 2024 16:30:00 +0000

Type	Values Removed	Values Added
Description		A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification. This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.
Title		Cisco NX-OS Software Image Verification Bypass Vulnerability
Weaknesses		CWE-284
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-image-sig-bypas-pQDRQvjL
Metrics		cvssV3_1 `{'score': 5.2, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N'}`

Subscriptions

No data.

MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2024-12-04T16:13:13.890Z

Updated: 2025-04-08T14:29:18.430Z

Reserved: 2023-11-08T15:08:07.660Z

Link: CVE-2024-20397

Vulnrichment

Updated: 2024-12-04T19:27:45.801Z

NVD

Status : Deferred

Published: 2024-12-04T17:15:11.913

Modified: 2026-04-15T00:35:42.020

Link: CVE-2024-20397

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-284

Tracking

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact High

Availability Impact None

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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JSON object

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JSON object

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