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CVE-2026-22317— Command Injection Vulnerability in Root CA Certificate Transfer Workflow

Quick assessment

Affected
Phoenix Contact FL SWITCH 2005
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.

PHOENIX CONTACT FL NAT是德国菲尼克斯电气（PHOENIX CONTACT）公司的一系列工业安全网关。 PHOENIX CONTACT FL NAT存在命令注入漏洞，该漏洞源于设备Root CA证书传输工作流程中存在命令注入，可能导致高权限攻击者执行任意命令。以下产品受到影响：FL NAT 2008、FL NAT 2208、FL NAT 2304-2GC-2SFP、FL SWITCH 2005、FL SWITCH 2008和FL SWITCH 2008F。

CVSS 7.2 · High EPSS 1.04% · P64
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I. Basic Information for CVE-2026-22317

Vulnerability Information
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Vulnerability Title
Command Injection Vulnerability in Root CA Certificate Transfer Workflow
Source: CVE Program / CVE List V5
Vulnerability Description
A command injection vulnerability in the device’s Root CA certificate transfer workflow allows a high-privileged attacker to send crafted HTTP POST requests that result in arbitrary command execution on the underlying Linux OS with root privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
PHOENIX CONTACT FL NAT 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHOENIX CONTACT FL NAT是德国菲尼克斯电气（PHOENIX CONTACT）公司的一系列工业安全网关。 PHOENIX CONTACT FL NAT存在命令注入漏洞，该漏洞源于设备Root CA证书传输工作流程中存在命令注入，可能导致高权限攻击者执行任意命令。以下产品受到影响：FL NAT 2008、FL NAT 2208、FL NAT 2304-2GC-2SFP、FL SWITCH 2005、FL SWITCH 2008和FL SWITCH 2008F。
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
Phoenix Contact FL SWITCH 2005 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2008 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2016 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2105 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2108 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2116 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2204-2TC-2SFX 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2205 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2206-2FX 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2206-2FX SM 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2206-2FX SM ST 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2206-2FX ST 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2206-2SFX 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2206-2SFX PN 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2206C-2FX 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2207-FX 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2207-FX SM 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2208 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2208 PN 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2208C 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2212-2TC-2SFX 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2214-2FX 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2214-2FX SM 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2214-2SFX 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2214-2SFX PN 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2216 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2216 PN 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2304-2GC-2SFP 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2306-2SFP 0.0.0 ~ 3.53 -
Phoenix Contact FL SWITCH 2306-2SFP PN 0.0.0 ~ 3.53 -

II. Public POCs for CVE-2026-22317

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III. Intelligence Information for CVE-2026-22317

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Vendor Advisories for CVE-2026-22317 (1)

Same Patch Batch · Phoenix Contact · 2026-03-18 · 8 CVEs total

CVE-2026-22323 7.1 HIGH Cross‑Site Request Forgery in Link Aggregation Configuration
CVE-2026-22322 7.1 HIGH Stored Cross‑Site Scripting in Link Aggregation Name Handling
CVE-2026-22316 6.5 MEDIUM Buffer Overflow using TFTP Filename
CVE-2026-22320 6.5 MEDIUM Stack-Based Buffer Overflow in TFTP File-Transfer Command Handling over CLI
CVE-2026-22321 5.3 MEDIUM Stack-Based Buffer Overflow in CLI Login Username Handling over CLI
CVE-2026-22318 4.9 MEDIUM Stack-Based Buffer Overflow in File Transfer Parameter Handling
CVE-2026-22319 4.9 MEDIUM Stack-Based Buffer Overflow in File Install Parameter Handling

IV. Related Vulnerabilities

Same product: FL SWITCH 2005
Same vendor: Phoenix Contact
Same weakness: CWE-77