Threats Tagged 'cve-2026-20324'

CVE-2026-20324 is a critical vulnerability in the sftunnel inter-device communication protocol of Cisco Secure Firewall Management Center (FMC) Software. It allows an authenticated remote attacker with valid user credentials to execute arbitrary commands as root by exploiting improper file write permissions. The attacker can hijack or act as a registered sftunnel peer to write and execute malicious files with root privileges on the affected device.

A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure Firewall Management Center (FMC) Software could allow an authenticated, remote attacker to execute arbitrary commands as root. This vulnerability exists because a registered sftunnel peer has incorrect permissions to write an arbitrary file to any location on the device. An attacker could exploit this vulnerability by hijacking the sftunnel communication connection or being a valid registered sftunnel peer and sending an sftunnel command to write a malicious file to the disk of an affected device. A successful exploit could allow the attacker to write a file to the device that is executed with root privileges. To exploit this vulnerability, the attacker must have valid user credentials on the affected device.