CVE-2019-1809

MediumCVSS 6.7/10Last modified Jun 17, 2026

Description

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.

Metrics

CVSS 3.1 6.7/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-347

Affected software

No affected versions have been published.

Timeline

Published: May 15, 2019
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2019

CVE-2019-18106.7A vulnerability in the Image Signature Verification feature used in an NX-OS CLI command in Cisco Nexus 3000 Series and 9000 Series Switches CVE-2019-18116.7A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with admini CVE-2019-18126.7A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with admini CVE-2019-18136.7A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with admini CVE-2019-18148.6A vulnerability in the interactions between the DHCP and TFTP features for Cisco Small Business 300 Series (Sx300) Managed Switches could al CVE-2019-18155.3A security vulnerability was discovered in the local status page functionality of Cisco Meraki’s MX67 and MX68 security appliance models tha CVE-2019-18167.8A vulnerability in the log subscription subsystem of the Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to CVE-2019-18177.5A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance could allow an unauthenticated, re CVE-2019-181776.5In certain Citrix products, information disclosure can be achieved by an authenticated VPN user when there is a configured SSL VPN endpoint.CVE-2019-181787.5Real Time Engineers FreeRTOS+FAT 160919a has a use after free. The function FF_Close() is defined in ff_file.c. The file handler pxFile is f CVE-2019-181794.3An issue was discovered in Open Ticket Request System (OTRS) 7.0.x through 7.0.12, and Community Edition 5.0.x through 5.0.38 and 6.0.x thro CVE-2019-18186.5A vulnerability in the web-based management interface of Cisco Prime Infrastructure and Cisco Evolved Programmable Network (EPN) Manager sof