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CVE-2026-20017— Cisco Secure FTD Software Authenticated Command Injection Vulnerability

Quick assessment

Affected
Cisco Cisco Secure Firewall Threat Defense (FTD) Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Secure Firewall Threat Defense是美国思科（Cisco）公司的一个集成式防火墙平台。 Cisco Secure Firewall Threat Defense存在安全漏洞，该漏洞源于用户提供的命令参数输入验证不足，可能导致经过身份验证的本地攻击者以root权限执行任意命令。

CVSS 6.0 · Medium EPSS 0.17% · P7
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I. Basic Information for CVE-2026-20017

Vulnerability Information
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Vulnerability Title
Cisco Secure FTD Software Authenticated Command Injection Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the CLI of Cisco Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system as root. To exploit this vulnerability, the attacker must have valid administrative credentials on an affected device. This vulnerability is due to insufficient input validation of user-supplied command arguments. An attacker could exploit this vulnerability by submitting crafted input for a specific CLI command. A successful exploit could allow the attacker to execute commands on the underlying operating system as root.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
带着不必要的权限执行
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Secure Firewall Threat Defense 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Secure Firewall Threat Defense是美国思科（Cisco）公司的一个集成式防火墙平台。 Cisco Secure Firewall Threat Defense存在安全漏洞，该漏洞源于用户提供的命令参数输入验证不足，可能导致经过身份验证的本地攻击者以root权限执行任意命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.1 -

II. Public POCs for CVE-2026-20017

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III. Intelligence Information for CVE-2026-20017

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Vendor Advisories for CVE-2026-20017 (1)

Same Patch Batch · Cisco · 2026-03-04 · 50 CVEs total

CVE-2026-20079 10.0 CRITICAL Cisco Secure Firewall Management Center Authentication Bypass Remote Code Execution Vulner
CVE-2026-20131 10.0 CRITICAL Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability
CVE-2026-20103 8.6 HIGH Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏
CVE-2026-20101 8.6 HIGH Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure FTD Software 安全特征问题漏洞
CVE-2026-20082 8.6 HIGH Cisco Secure Firewall Adaptive Security Appliance 安全漏洞
CVE-2026-20039 8.6 HIGH Cisco Adaptive Security Appliance and Firepower Threat Defense Software SSL VPN Authentica
CVE-2026-20002 8.1 HIGH Cisco Secure Firewall Management Center SQL注入漏洞
CVE-2026-20049 7.7 HIGH Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏
CVE-2026-20105 7.7 HIGH Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏
CVE-2026-20100 7.7 HIGH Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏
CVE-2026-20014 7.7 HIGH Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏
CVE-2026-20062 7.2 HIGH Cisco Secure Firewall Adaptive Security Appliance 安全漏洞
CVE-2026-20050 6.8 MEDIUM Cisco Secure Firewall Threat Defense Decryption Policy Denial of Service Vulnerability
CVE-2026-20020 6.8 MEDIUM Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 输入验
CVE-2026-20024 6.8 MEDIUM Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 缓冲区
CVE-2026-20025 6.8 MEDIUM Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 输入验
CVE-2026-20064 6.5 MEDIUM Cisco Secure Firewall Threat Defense 代码问题漏洞
CVE-2026-20001 6.5 MEDIUM Cisco Secure Firewall Management Center Software SQL Injection Vulnerabilities
CVE-2026-20070 6.1 MEDIUM Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Softw
CVE-2026-20022 6.1 MEDIUM Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏

Showing top 20 of 50 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco Secure Firewall Threat Defense (FTD) Software
Same vendor: Cisco
Same weakness: CWE-250

V. Comments for CVE-2026-20017

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