TeleMessage TM SGNL Hidden Functionality Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 12/05/2025. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| text message archiver | ≤ 2025-05-05 |
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.
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