CSL DualCom GPRS CS2300-R devices with firmware 1.25 through 3.53 rely on a polyalphabetic substitution cipher with hardcoded keys, which makes it easier for remote attackers to defeat a cryptographic protection mechanism by capturing IP or V.22bis PSTN protocol traffic.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gprs_cs2300-r_firmware | Csl_dualcom | 1.25 | 1.25 |
| Gprs_cs2300-r_firmware | Csl_dualcom | 3.53 | 3.53 |