CVE-2026-20324

CVE CVE-2026-20324EUVD EUVD-2026-81103Published 2026-09-16T20:06:52.000ZLast changed 2026-09-18T03:55:52.000ZCVSS 9.9

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Cisco — Cisco Secure Firewall Management Center (FMC) 7.2.10; 7.7.12; 7.6.2.1; 7.2.9; 7.4.3; 7.2.5.1; 7.4.2.2; 7.2.4.1; 7.0.7; 7.2.8.1; 7.2.7; 7.2.5.2; 7.3.0; 7.4.6; 7.2.3.1; 7.2.6; 7.6.2; 7.7.10; 7.0.3; 10.0.1; 7.0.1.1; 7.6.4; 7.3.1.2; 7.4.1; 7.2.10.2; 7.4.2.1; 7.0.8.1; 7.2.4; 7.0.2; 7.6.1; 7.0.6.2; 7.2.10.1; 7.0.9; 7.2.3; 7.2.0; 7.3.1.1; 7.4.2.4; 7.0.1; 7.0.0; 7.2.11; 7.4.1.1; 7.0.8; 7.7.11; 7.0.6.3; 7.0.0.1; 7.7.10.1; 7.2.5; 7.2.8; 7.3.1; 7.4.2.3; 7.4.2; 7.4.0; 7.6.0; 7.2.0.1; 7.0.2.1; 7.6.3; 7.6.5; 7.0.6; 7.2.1; 10.0.0; 7.0.5; 7.4.4; 7.7.0; 7.2.2; 7.4.7; 7.0.4; 7.0.6.1; 7.4.5

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Cisco — Secure Firewall Management Center (FMC)

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.