CVE-2021-21002
High
Description
In Phoenix Contact FL COMSERVER UNI in versions < 2.40 a invalid Modbus exception response can lead to a temporary denial of service.
SeverityHigh
CVSS7.5
Exploit probability—
ProductPhoenixcontact Fl Comserver Uni 232\/422\/485 Firmware
PublishedJun 25, 2021
First seenJun 25, 2021
Weakness typeCWE-772CWE-772
How to fix
Update
- phoenixcontact fl_comserver_uni_232\/422\/485_firmware2.40 or later
- phoenixcontact fl_comserver_uni_232\/422\/485-t_firmware2.40 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| phoenixcontact fl_comserver_uni_232\/422\/485_firmware | v < 2.40 | 2.40 |
| phoenixcontact fl_comserver_uni_232\/422\/485-t_firmware | v < 2.40 | 2.40 |
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