CVE-2026-20324 Cisco Secure Firewall Management Center - Command Injection

Cisco Secure Firewall Management Center contains a command injection caused by improper permissions in sftunnel inter-device communication protocol, letting authenticated remote attackers execute arbitrary commands as root, exploit requires valid user credentials.

CVSS base score 9.9 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.45% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-862

Vendor fix

Update to the latest available version of Cisco Secure Firewall Management Center.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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