Configuration changes via reflected dyn_conn.php script injection
Published Dec 9, 2025 · Updated Dec 9, 2025
Cross-site scripting in dyn_conn.php in Phoenix Contact FL SWITCH 2xxx firmware before 3.50 allows remote attackers to alter WBM settings. The endpoint reflects attacker-controlled input that induces an authenticated user's browser to submit a manipulated POST request and apply chosen web-management parameters. An authenticated user's interaction is required; access remains limited to web-application configuration, and the httpOnly cookie prevents session takeover.
Summary
What happened
Cross-site scripting in dyn_conn.php in Phoenix Contact FL SWITCH 2xxx firmware before 3.50 allows remote attackers to alter WBM settings. The endpoint reflects attacker-controlled input that induces an authenticated user's browser to submit a manipulated POST request and apply chosen web-management parameters. An authenticated user's interaction is required; access remains limited to web-application configuration, and the httpOnly cookie prevents session takeover.
The record
- CVE
- CVE-2025-41695
- Published
- Dec 9, 2025
- Updated
- Dec 9, 2025
- Vendor
- Phoenix Contact
- Product
- FL SWITCH 2204-2TC-2SFX
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 9, 2025CVE publishedPublication date reported by the CVE source.
- Dec 9, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.0.0 <3.50
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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