A leftover debug code vulnerability exists in the Telnet Diagnostic Interface…
Priority HIGH 82CWE-489Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
A leftover debug code vulnerability exists in the Telnet Diagnostic Interface functionality of AutomationDirect P3-550E 1.2.10.9. A specially crafted series of network requests can lead to unauthorized access. An attacker can send a sequence of requests to trigger this vulnerability.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01512 74th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AutomationDirect | P3-550E | 1.2.10.9 | — | No fix listed | CNA |
- P3-550E VendorAutomationDirect Affected 1.2.10.9 Fixed in — No fix listed CNA
CPE configurations NVD · 18
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:automationdirect:p3-550e_firmware:1.2.10.9:*:*:*:*:*:*:* | 1.2.10.9 | Vulnerable | AutomationDirect |
| cpe:2.3:o:automationdirect:p3-550e_firmware:4.1.1.10:*:*:*:*:*:*:* | 4.1.1.10 | Vulnerable | AutomationDirect |
| cpe:2.3:h:automationdirect:p3-550e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AutomationDirect |
| cpe:2.3:o:automationdirect:p3-550_firmware:1.2.10.9:*:*:*:*:*:*:* | 1.2.10.9 | Vulnerable | AutomationDirect |
| cpe:2.3:o:automationdirect:p3-550_firmware:4.1.1.10:*:*:*:*:*:*:* | 4.1.1.10 | Vulnerable | AutomationDirect |
| cpe:2.3:h:automationdirect:p3-550:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AutomationDirect |
| cpe:2.3:o:automationdirect:p3-530_firmware:1.2.10.9:*:*:*:*:*:*:* | 1.2.10.9 | Vulnerable | AutomationDirect |
| cpe:2.3:o:automationdirect:p3-530_firmware:4.1.1.10:*:*:*:*:*:*:* | 4.1.1.10 | Vulnerable | AutomationDirect |
| cpe:2.3:h:automationdirect:p3-530:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AutomationDirect |
| cpe:2.3:o:automationdirect:p2-550_firmware:1.2.10.10:*:*:*:*:*:*:* | 1.2.10.10 | Vulnerable | AutomationDirect |
- cpe:2.3:o:automationdirect:p3-550e_firmware:1.2.10.9:*:*:*:*:*:*:* Versions 1.2.10.9 Vulnerable ·AutomationDirect
- cpe:2.3:o:automationdirect:p3-550e_firmware:4.1.1.10:*:*:*:*:*:*:* Versions 4.1.1.10 Vulnerable ·AutomationDirect
- cpe:2.3:h:automationdirect:p3-550e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AutomationDirect
- cpe:2.3:o:automationdirect:p3-550_firmware:1.2.10.9:*:*:*:*:*:*:* Versions 1.2.10.9 Vulnerable ·AutomationDirect
- cpe:2.3:o:automationdirect:p3-550_firmware:4.1.1.10:*:*:*:*:*:*:* Versions 4.1.1.10 Vulnerable ·AutomationDirect
- cpe:2.3:h:automationdirect:p3-550:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AutomationDirect
- cpe:2.3:o:automationdirect:p3-530_firmware:1.2.10.9:*:*:*:*:*:*:* Versions 1.2.10.9 Vulnerable ·AutomationDirect
- cpe:2.3:o:automationdirect:p3-530_firmware:4.1.1.10:*:*:*:*:*:*:* Versions 4.1.1.10 Vulnerable ·AutomationDirect
- cpe:2.3:h:automationdirect:p3-530:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AutomationDirect
- cpe:2.3:o:automationdirect:p2-550_firmware:1.2.10.10:*:*:*:*:*:*:* Versions 1.2.10.10 Vulnerable ·AutomationDirect
Show 8 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:automationdirect:p2-550_firmware:4.1.1.10:*:*:*:*:*:*:* | 4.1.1.10 | Vulnerable | AutomationDirect |
| cpe:2.3:h:automationdirect:p2-550:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AutomationDirect |
| cpe:2.3:o:automationdirect:p1-550_firmware:1.2.10.10:*:*:*:*:*:*:* | 1.2.10.10 | Vulnerable | AutomationDirect |
| cpe:2.3:o:automationdirect:p1-550_firmware:4.1.1.10:*:*:*:*:*:*:* | 4.1.1.10 | Vulnerable | AutomationDirect |
| cpe:2.3:h:automationdirect:p1-550:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AutomationDirect |
| cpe:2.3:o:automationdirect:p1-540_firmware:1.2.10.10:*:*:*:*:*:*:* | 1.2.10.10 | Vulnerable | AutomationDirect |
| cpe:2.3:o:automationdirect:p1-540_firmware:4.1.1.10:*:*:*:*:*:*:* | 4.1.1.10 | Vulnerable | AutomationDirect |
| cpe:2.3:h:automationdirect:p1-540:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AutomationDirect |
- cpe:2.3:o:automationdirect:p2-550_firmware:4.1.1.10:*:*:*:*:*:*:* Versions 4.1.1.10 Vulnerable ·AutomationDirect
- cpe:2.3:h:automationdirect:p2-550:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AutomationDirect
- cpe:2.3:o:automationdirect:p1-550_firmware:1.2.10.10:*:*:*:*:*:*:* Versions 1.2.10.10 Vulnerable ·AutomationDirect
- cpe:2.3:o:automationdirect:p1-550_firmware:4.1.1.10:*:*:*:*:*:*:* Versions 4.1.1.10 Vulnerable ·AutomationDirect
- cpe:2.3:h:automationdirect:p1-550:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AutomationDirect
- cpe:2.3:o:automationdirect:p1-540_firmware:1.2.10.10:*:*:*:*:*:*:* Versions 1.2.10.10 Vulnerable ·AutomationDirect
- cpe:2.3:o:automationdirect:p1-540_firmware:4.1.1.10:*:*:*:*:*:*:* Versions 4.1.1.10 Vulnerable ·AutomationDirect
- cpe:2.3:h:automationdirect:p1-540:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AutomationDirect
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-21785
References
More AutomationDirect P1-540 Firmware vulnerabilities
- TI-2024-14780 Improper access control in AutomationDirect P3-550E CVSS 3.1CRITICAL 9.1
- TI-2024-16461 Stack-based buffer overflow in AutomationDirect P3-550E CVSS 3.1CRITICAL 9.8
- TI-2024-16460 Stack-based buffer overflow in AutomationDirect P3-550E CVSS 3.1CRITICAL 9.8
- TI-2024-15624 Insufficient verification of data authenticity in AutomationDirect P3-550E CVSS 3.1CRITICAL 9.8
- TI-2024-16368 Out-of-bounds write in AutomationDirect P3-550E CVSS 3.1HIGH 7.5
- TI-2024-16453 Out-of-bounds write in AutomationDirect P3-550E CVSS 3.1HIGH 8.2
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences