Cisco Secure Firewall Threat Defense (FTD) Software 6.6.0 when installed on Cisco Firepower 1000 Series

productUS

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

by severity
1critical42high44medium1low
updated 2026-10-28
01

vulnerabilities (118)

Related CVEs.

IDseverity exploitable
CVE-2020-3452UShigh7.5OT criticalKEV
CVE-2025-20362UShigh8.6OT criticalKEV
CVE-2020-3580USmedium6.1OT criticalKEV
CVE-2025-20333US—OT criticalKEV
CVE-2024-20353UShigh8.6OT criticalKEV
CVE-2023-20269UScritical9.1OT criticalKEV
CVE-2024-20359USmedium6.0OT criticalKEV
CVE-2024-20481USmedium5.8OT criticalKEV
CVE-2022-20759UShigh8.8—
CVE-2025-20363US——
CVE-2020-3304UShigh8.6—
CVE-2020-3554UShigh7.5—
CVE-2021-40114UShigh7.5—
CVE-2021-1224USmedium5.3—
CVE-2021-1223UShigh7.5—
CVE-2020-3436UShigh8.6—
CVE-2022-20713USmedium6.1—
CVE-2021-1518UShigh8.8—
CVE-2020-3529UShigh7.5—
CVE-2020-3533UShigh7.5—
CVE-2021-40117UShigh7.5—
CVE-2021-1495USmedium5.3—
CVE-2020-3555UShigh7.5—
CVE-2021-34749UShigh8.6—
CVE-2021-1504UShigh7.5—
CVE-2021-1445UShigh7.5—
CVE-2021-34783UShigh7.5—
CVE-2022-20760UShigh7.5—
CVE-2022-20745UShigh7.5—
CVE-2022-20685US——
CVE-2020-3528UShigh7.5—
CVE-2021-34781UShigh7.5—
CVE-2021-40118UShigh7.5—
CVE-2022-20751UShigh7.5—
CVE-2022-20715UShigh8.6—
CVE-2021-1501UShigh7.5—
CVE-2020-3564USmedium5.3—
CVE-2021-1573UShigh7.5—
CVE-2020-3561USmedium4.7—
CVE-2020-3585USlow3.7—
CVE-2022-20757UShigh7.5—
CVE-2020-3578USmedium6.5OT elevated—
CVE-2021-1493UShigh7.1—
CVE-2021-1489USmedium6.5—
CVE-2020-3582USmedium6.1—
CVE-2020-3581USmedium6.1—
CVE-2021-34791USmedium5.3—
CVE-2021-34790USmedium5.3—
CVE-2021-1494US——
CVE-2020-3583USmedium6.1—
showing 50 of 118
02

weaknesses (8)

The flaw types (CWEs) most of these CVEs share.

  • CWE-20Improper Input Validation15 CVEs
  • CWE-400Uncontrolled Resource Consumption10 CVEs
  • CWE-401Missing Release of Memory after Effective Lifetime9 CVEs
  • CWE-284Improper Access Control7 CVEs
  • CWE-787Out-of-bounds Write7 CVEs
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')7 CVEs
  • CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')6 CVEs
  • CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer4 CVEs
03

sources (1)

Which sources assert this record, and when.

scry

Products carry known vulnerabilities once they are exposed to the internet. See what is exposed on your perimeter with a free passive scan.

Free scan