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Full vulnerability report · 2026
CVE-2026-22317High confidence

Command Injection Vulnerability in Root CA Certificate Transfer Workflow

Phoenix Contact · FL SWITCH 2005

7.2HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 1.00% for the current model date.

Compensating controls

  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Phoenix Contact FL SWITCH 2005 and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 30 daysRemediation target: Within 180 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-12786

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

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.

What

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.

Why

Untrusted input reaches a command interpreter without sufficient validation or separation from command syntax.

How

An attacker operating through a network path may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

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.

Why

Untrusted input reaches a command interpreter without sufficient validation or separation from command syntax.

How

An attacker operating through a network path may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Neutralization of Special Elements used in a Command ('Command Injection') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
High: elevated access is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-77 ↗

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'). The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRHighPrivileges required: The attacker needs elevated or administrative privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkCWE-77
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2026-0765Phoenix Contact FL SWITCH: Mehrere Schwachstellen

Ein entfernter, authentisierter oder anonymer Angreifer kann mehrere Schwachstellen in Phoenix Contact FL SWITCH ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, einen Denial-of-Service-Zustand zu verursachen, Cross-Site-Scripting-Angriffe durchzuführen oder Daten zu manipulieren.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260325Security Bulletin 25 Mar 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 25 Mar 2026, published on 25 March 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
  • FL SWITCH 2005: 0.0.0 < 3.53
  • FL SWITCH 2008: 0.0.0 < 3.53
  • FL SWITCH 2016: 0.0.0 < 3.53
  • FL SWITCH 2105: 0.0.0 < 3.53
  • FL SWITCH 2108: 0.0.0 < 3.53
  • FL SWITCH 2116: 0.0.0 < 3.53
  • FL SWITCH 2204-2TC-2SFX: 0.0.0 < 3.53
  • FL SWITCH 2205: 0.0.0 < 3.53
  • FL SWITCH 2206-2FX: 0.0.0 < 3.53
  • FL SWITCH 2206-2FX SM: 0.0.0 < 3.53
  • FL SWITCH 2206-2FX SM ST: 0.0.0 < 3.53
  • FL SWITCH 2206-2FX ST: 0.0.0 < 3.53
  • FL SWITCH 2206-2SFX: 0.0.0 < 3.53
  • FL SWITCH 2206-2SFX PN: 0.0.0 < 3.53
  • FL SWITCH 2206C-2FX: 0.0.0 < 3.53
  • FL SWITCH 2207-FX: 0.0.0 < 3.53
  • FL SWITCH 2207-FX SM: 0.0.0 < 3.53
  • FL SWITCH 2208: 0.0.0 < 3.53
  • FL SWITCH 2208 PN: 0.0.0 < 3.53
  • FL SWITCH 2208C: 0.0.0 < 3.53
  • FL SWITCH 2212-2TC-2SFX: 0.0.0 < 3.53
  • FL SWITCH 2214-2FX: 0.0.0 < 3.53
  • FL SWITCH 2214-2FX SM: 0.0.0 < 3.53
  • FL SWITCH 2214-2SFX: 0.0.0 < 3.53
  • FL SWITCH 2214-2SFX PN: 0.0.0 < 3.53
  • FL SWITCH 2216: 0.0.0 < 3.53
  • FL SWITCH 2216 PN: 0.0.0 < 3.53
  • FL SWITCH 2304-2GC-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2306-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2306-2SFP PN: 0.0.0 < 3.53
  • FL SWITCH 2308: 0.0.0 < 3.53
  • FL SWITCH 2308 PN: 0.0.0 < 3.53
  • FL SWITCH 2312-2GC-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2314-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2314-2SFP PN: 0.0.0 < 3.53
  • FL SWITCH 2316: 0.0.0 < 3.53
  • FL SWITCH 2316 PN: 0.0.0 < 3.53
  • FL SWITCH 2404-2TC-2SFX: 0.0.0 < 3.53
  • FL SWITCH 2406-2SFX: 0.0.0 < 3.53
  • FL SWITCH 2406-2SFX PN: 0.0.0 < 3.53
  • FL SWITCH 2408: 0.0.0 < 3.53
  • FL SWITCH 2408 PN: 0.0.0 < 3.53
  • FL SWITCH 2412-2TC-2SFX: 0.0.0 < 3.53
  • FL SWITCH 2414-2SFX: 0.0.0 < 3.53
  • FL SWITCH 2414-2SFX PN: 0.0.0 < 3.53
  • FL SWITCH 2416: 0.0.0 < 3.53
  • FL SWITCH 2416 PN: 0.0.0 < 3.53
  • FL SWITCH 2504-2GC-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2506-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2506-2SFP PN: 0.0.0 < 3.53
  • FL SWITCH 2508: 0.0.0 < 3.53
  • FL SWITCH 2508 PN: 0.0.0 < 3.53
  • FL SWITCH 2512-2GC-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2514-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2514-2SFP PN: 0.0.0 < 3.53
  • FL SWITCH 2516: 0.0.0 < 3.53
  • FL SWITCH 2516 PN: 0.0.0 < 3.53
  • FL SWITCH 2608: 0.0.0 < 3.53
  • FL SWITCH 2608 PN: 0.0.0 < 3.53
  • FL SWITCH 2708: 0.0.0 < 3.53
  • FL SWITCH 2708 PN: 0.0.0 < 3.53
  • FL SWITCH 2303-8SP1: 0.0.0 < 3.53
  • FL NAT 2008: 0.0.0 < 3.53
  • FL NAT 2208: 0.0.0 < 3.53
  • FL NAT 2304-2GC-2SFP: 0.0.0 < 3.53
  • FL SWITCH 2008F: 0.0.0 < 3.53
  • FL SWITCH 2316/K1: 0.0.0 < 3.53
  • FL SWITCH 2506-2SFP/K1: 0.0.0 < 3.53
  • FL SWITCH 2508/K1: 0.0.0 < 3.53
  • FL SWITCH TSN 2316: 0.0.0 < 3.53
  • FL SWITCH TSN 2312-2GC-2SFP: 0.0.0 < 3.53
  • FL SWITCH TSN 2314-2SFP: 0.0.0 < 3.53
  • FL SWITCH 5924-4GC: 0.0.0 < 3.53
  • FL SWITCH 5916-8GC-4SFP+: 0.0.0 < 3.53
  • FL SWITCH 5924SFP-4GC: 0.0.0 < 3.53
  • FL SWITCH 5924-4SFP+: 0.0.0 < 3.53
  • FL SWITCH 5916SFP-8GC-4SFP+: 0.0.0 < 3.53
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 18 Mar 2026 · Last source change 18 Mar 2026, 13:57 UTC · CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-12786
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD awaiting enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-12786↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-22317 · cve.blacktree.nl