Description
An unauthenticated denial-of-service vulnerability in the device's PLCnext Engineer communication interface allow an remote attacker to interrupt access via the client application. Successful exploitation prevents communication until the PLCnext service is manually restarted.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Phoenix Contact | AXC F 1152 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | AXC F 1252 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | AXC F 2000 EA | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | AXC F 2152 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | AXC F 3152 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | BPC 9102S | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | BPC 9202S | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | RFC 4072R | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | RFC 4072S | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | VL3 UPC 2440 EDGE | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | VPLCNEXT CONTROL 1000 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | VPLCNEXT CONTROL 2000 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | VPLCNEXT CONTROL 3000 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | VPLCNEXT CONTROL 500 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | Catan C1 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | EPC 1502 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
| Phoenix Contact | EPC 1522 | 2019.0.4 – < 2026.0.3 | 2026.0.3 |
Advisories 1
- VDE-2025-056 Phoenix Contact: Improper Input Validation Vulnerabilities in PLCnext Firmware CERT@VDE · Aug 12, 2026