CVE-2025-41753
Critical
Description
The object name of a dynamically created BACnet File Object is interpreted as a file path without sufficient validation. Because relative paths are not limited to the intended directory, an unauthenticated remote attacker can traverse outside of it and read or overwrite arbitrary files on the device, which may lead to full system compromise.
SeverityCritical
CVSS9.8
Exploit probability—
ProductWago 0751-9x01
PublishedOct 1, 2026
First seenOct 1, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- WAGO 0751-9x014.8.9, 4.8.9 (70) or later
- WAGO 0750-811x-xxxx-xxxx4.8.9, 4.8.9 (70) or later
- WAGO 0750-821x-xxx-xxx4.8.9, 4.8.9 (70) or later
- WAGO 0762-420x-8000-000x4.8.9, 4.8.9 (70) or later
- WAGO 0762-430x-8000-000x4.8.9, 4.8.9 (70) or later
- WAGO 0762-520x-8000-000x4.8.9, 4.8.9 (70) or later
- WAGO 0762-530x-8000-000x4.8.9, 4.8.9 (70) or later
- WAGO 0762-620x-8000-000x4.8.9, 4.8.9 (70) or later
- WAGO 0762-630x-8000-000x4.8.9, 4.8.9 (70) or later
- WAGO 0752-8303-8000-00024.8.9, 4.8.9 (70) or later
- WAGO 0762-340x4.8.9, 4.8.9 (70) or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| WAGO 0751-9x01 | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0750-811x-xxxx-xxxx | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0750-821x-xxx-xxx | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0762-420x-8000-000x | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0762-430x-8000-000x | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0762-520x-8000-000x | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0762-530x-8000-000x | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0762-620x-8000-000x | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0762-630x-8000-000x | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0752-8303-8000-0002 | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
| WAGO 0762-340x | 1.0.0 ≤ v < 4.8.9, 1.0.0 ≤ v < 4.8.9 (70) | 4.8.9, 4.8.9 (70) |
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