What is CVE-2021-1448?

CVE-2021-1448 is a high-severity vulnerability in Cisco Firepower Threat Defense Software, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2021-04-29.

How severe is CVE-2021-1448?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Cisco Firepower Threat Defense Software

CVE-2021-1448

A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary commands with root privileges on the underlying operating system of an affected device that is running in multi-instance mode. This vulnerability is due to insufficient validation of user-supplied command arguments. An attacker could exploit this vulnerability by submitting crafted input to the affected command. A successful exploit could allow the attacker to execute commands on the underlying operating system with root privileges.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-04-29 · last modified 2026-08-11.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (20.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-cmdi… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1448?: CVE-2021-1448 is a high-severity vulnerability in Cisco Firepower Threat Defense Software, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2021-04-29.
How severe is CVE-2021-1448?: High severity. CVSS v3 base score is 7.8 out of 10.