What’s Vulnerable › Vulnerabilities

CVE-2019-1984: Cisco Enterprise Network Functions Virtualization Infrastructure Software Arbitrary File Write Vulnerability

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-21 · updated 2026-06-17
• Weakness: CWE-20

Description

A vulnerability in Cisco Enterprise Network Functions Virtualization Infrastructure Software (NFVIS) could allow an authenticated, remote attacker with administrator privileges to overwrite files on the underlying operating system (OS) of an affected device. The vulnerability is due to improper input validation in an NFVIS file-system command. An attacker could exploit this vulnerability by using crafted variables during the execution of an affected command. A successful exploit could allow the attacker to overwrite arbitrary files on the underlying OS.

Affected products

• Cisco Enterprise Network Function Virtualization Infrastructure Sofware: before 3.12.1 — fixed in 3.12.1

How to fix

Upgrade to a fixed version: Cisco Enterprise Network Function Virtualization Infrastructure Sofware 3.12.1. Check the vendor advisory for mitigations.

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-nfv-filewrite
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-nfv-filewrite

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