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Vulnerabilities

CVE-2019-1649 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

A vulnerability in the logic that handles access control to one of the hardware components in Cisco's proprietary Secure Boot implementation could allow an authenticated, local attacker to write a modified firmware image to the component. This vulnerability affects multiple Cisco products that support hardware-based Secure Boot functionality. The vulnerability is due to an improper check on the area of code that manages on-premise updates to a Field Programmable Gate Array (FPGA) part of the Secure Boot hardware implementation. An attacker with elevated privileges and access to the underlying operating system that is running on the affected device could exploit this vulnerability by writing a modified firmware image to the FPGA. A successful exploit could either cause the device to become unusable (and require a hardware replacement) or allow tampering with the Secure Boot verification process, which under some circumstances may allow the attacker to install and boot a malicious software image. An attacker will need to fulfill all the following conditions to attempt to exploit this vulnerability: Have privileged administrative access to the device. Be able to access the underlying operating system running on the device; this can be achieved either by using a supported, documented mechanism or by exploiting another vulnerability that would provide an attacker with such access. Develop or have access to a platform-specific exploit. An attacker attempting to exploit this vulnerability across multiple affected platforms would need to research each one of those platforms and then develop a platform-specific exploit. Although the research process could be reused across different platforms, an exploit developed for a given hardware platform is unlikely to work on a different hardware platform.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

👁 NIST CVSS score

NIST: NVD

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://www.securityfocus.com/bid/108350	CVE, Cisco Systems, Inc.	Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190513-secureboot	CVE, Cisco Systems, Inc.	Vendor Advisory
https://www.kb.cert.org/vuls/id/400865	CVE, Cisco Systems, Inc.	Third Party Advisory US Government Resource
https://www.us-cert.gov/ics/advisories/icsa-20-072-03	CVE, Cisco Systems, Inc.	Third Party Advisory US Government Resource

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-667	Improper Locking	👁 cwe source acceptance level NIST
CWE-284	Improper Access Control	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

11 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-1649
NVD Published Date:
05/13/2019
NVD Last Modified:
06/16/2026
Source:
Cisco Systems, Inc.

URL: https://nvd.nist.gov/vuln/detail/CVE-2019-1649

⇱ NVD - CVE-2019-1649

CVE-2019-1649 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

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Change History

CVE Modified by CISA-ADP 6/16/2026 10:28:57 PM

CVE Modified by Cisco Systems, Inc. 6/16/2026 10:28:57 PM

CVE Modified by CVE 11/20/2024 11:37:00 PM

CVE Modified by Cisco Systems, Inc. 5/14/2024 1:53:15 AM

Reanalysis by NIST 12/13/2022 2:42:20 PM

Modified Analysis by NIST 10/16/2020 8:59:17 AM

CVE Modified by Cisco Systems, Inc. 3/25/2020 11:15:16 PM

CVE Modified by Cisco Systems, Inc. 10/09/2019 7:47:37 PM

Initial Analysis by NIST 5/17/2019 9:31:13 AM

CVE Modified by Cisco Systems, Inc. 5/16/2019 1:29:01 PM

CVE Modified by Cisco Systems, Inc. 5/14/2019 6:29:13 PM

Quick Info