CVE-2020-7540
Critical
Description
A CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause unauthenticated command execution in the controller when sending special HTTP requests.
SeverityCritical
CVSS9.8
Exploit probability—
ProductSchneider-electric Modicon M340 Bmxp341000 Firmware
PublishedDec 11, 2020
First seenDec 11, 2020
Weakness typeCWE-306Missing authentication for critical function
How to fix
Update
- schneider-electric modicon_m340_bmxp341000_firmware3.30 or later
- schneider-electric modicon_m340_bmxp342000_firmware3.30 or later
- schneider-electric modicon_m340_bmxp3420102_firmware3.30 or later
- schneider-electric modicon_m340_bmxp3420102cl_firmware3.30 or later
- schneider-electric modicon_m340_bmxp342020_firmware3.30 or later
- schneider-electric modicon_m340_bmxp3420302_firmware3.30 or later
- schneider-electric modicon_m340_bmxp3420302cl_firmware3.30 or later
- schneider-electric bmxnoe0100_firmware3.3 or later
- schneider-electric bmxnoe0110_firmware6.5 or later
- schneider-electric 140noe77101_firmware7.1 or later
- schneider-electric 140noe77111_firmware7.1 or later
- schneider-electric 140cpu65150_firmware6.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| schneider-electric modicon_m340_bmxp341000_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp342000_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp3420102_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp3420102cl_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp342020_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp3420302_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp3420302cl_firmware | v < 3.30 | 3.30 |
| schneider-electric bmxnoe0100_firmware | v < 3.3 | 3.3 |
| schneider-electric bmxnoe0110_firmware | v < 6.5 | 6.5 |
| schneider-electric 140noe77101_firmware | v < 7.1 | 7.1 |
| schneider-electric 140noe77111_firmware | v < 7.1 | 7.1 |
| schneider-electric 140cpu65150_firmware | v < 6.1 | 6.1 |
| schneider-electric 140cpu65160_firmware | v < 6.1 | 6.1 |
| schneider-electric 140noc78000_firmware | v < 1.74 | 1.74 |
| schneider-electric 140noc78100_firmware | v < 1.74 | 1.74 |
| schneider-electric 140noc77101_firmware | v < 1.08 | 1.08 |
| schneider-electric tsxp574634_firmware | v < 6.1 | 6.1 |
| schneider-electric tsxp575634_firmware | v < 6.1 | 6.1 |
| schneider-electric tsxp576634_firmware | v < 6.1 | 6.1 |
| schneider-electric tsxety4103_firmware | v < 6.2 | 6.2 |
| schneider-electric tsxety5103_firmware | v < 6.4 | 6.4 |
| schneider-electric bmxnoc0401_firmware | v < 2.10 | 2.10 |
| schneider-electric bmxnor200h_firmware | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.