CISA Known Exploited Vulnerability (KEV)
TeleMessage TM SGNL Hidden Functionality Vulnerability
May 12, 2025
June 2, 2025
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description
The TeleMessage archiving backend through 2025-05-05 holds cleartext copies of messages from TM SGNL (aka Archive Signal) app users, which is different functionality than described in the TeleMessage “End-to-End encryption from the mobile phone through to the corporate archive” documentation, as exploited in the wild in May 2025.
References
Weakness Enumeration
| CWE-ID | CWE Name |
|---|---|
|
CWE-912 |
Hidden Functionality |