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VulnerabilityPublished

CVE-2026-22317: Phoenix Contact FL SWITCH 2005 · Command Injection

Affects Phoenix Contact FL SWITCH 2005Source CVE Database V5

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Not known to be exploited · CVSS 7.2 High : upgrade to 3.53 soon.

Data as of 31 Oct 2026, 20:20 UTC

CVSS 3.1 base score
7.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 63% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.53
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.

What to do

Upgrade FL to 3.53.

Affected software

ProductAffectedFixed in
Phoenix ContactFL SWITCH 2005Affected
  • <3.53
Fixed in
  • 3.53
Phoenix ContactFL SWITCH 2008Affected
  • <3.53
Fixed in
  • 3.53
Phoenix ContactFL SWITCH 2016Affected
  • <3.53
Fixed in
  • 3.53
Phoenix ContactFL SWITCH 2105Affected
  • <3.53
Fixed in
  • 3.53
Phoenix ContactFL SWITCH 2108Affected
  • <3.53
Fixed in
  • 3.53
Phoenix ContactFL SWITCH 2116Affected
  • <3.53
Fixed in
  • 3.53

AI-suggested

  1. Immediately restrict access to the FL SWITCH 2005 management interfaces to trusted administrators only, using network segmentation and access control lists.
  2. Monitor network traffic for unusual HTTP POST requests targeting the Root CA certificate transfer workflow to detect potential exploitation attempts.
  3. Employ strict input validation and sanitization on any interfaces interacting with certificate management workflows, if custom configurations are possible.
  4. Implement multi-factor authentication and strong credential management to reduce the risk of privilege escalation to high-privileged accounts.
  5. Regularly audit device configurations and logs for signs of compromise or anomalous command executions.
  6. Engage with Phoenix Contact for official patches or firmware updates addressing this vulnerability and apply them promptly once available.
  7. Consider deploying network-based intrusion detection/prevention systems (IDS/IPS) with signatures tuned to detect exploitation attempts targeting this vulnerability.
  8. Develop and test incident response plans specific to industrial control system compromises involving network devices.

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.

References

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