Description
Multiple vulnerabilities in the multi-instance feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to escape the container for their FTD instance and execute commands with root privileges in the host namespace. These vulnerabilities are due to insufficient protections on the underlying filesystem. An attacker could exploit these vulnerabilities by modifying critical files on the underlying filesystem. A successful exploit could allow the attacker to execute commands with root privileges within the host namespace. This could allow the attacker to impact other running FTD instances.
Affected products
cisco: secure firewall threat defense; cisco: firepower 9300 firmware; cisco: firepower 9300; cisco: firepower 4115 firmware; cisco: firepower 4115; cisco: firepower 4125 firmware; cisco: firepower 4125; cisco: firepower 4145 firmware; cisco: firepower 4145; cisco: firepower 4110 firmware; cisco: firepower 4110; cisco: firepower 4120 firmware; cisco: firepower 4120; cisco: firepower 4140 firmware; cisco: firepower 4140
References2
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/c… Vendor Advisory
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/c… Vendor Advisory
Metrics
- CVSS 3.1
-
8.2
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 56 · as of 10 November 2026
- CWE
- CWE-216CWE-116
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