CVE-2025-47729
Published 2025-05-08 · Updated 2026-06-17 · Source cve@mitre.org
Summary
CVE-2025-47729 is a low-severity (CVSS 1.9) vulnerability in TeleMessage TM SGNL. CISA added it to the Known Exploited Vulnerabilities catalog on May 12, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 2, 2025. CISA does not currently list it as used in ransomware campaigns. TeleMessage has 3 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.
All 3 known-exploited TeleMessage vulnerabilities →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.
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
CISA Known-Exploited Vulnerability
Product: TeleMessage — TM SGNL
Name: TeleMessage TM SGNL Hidden Functionality Vulnerability
Date added: 2025-05-12 · Due: 2025-06-02
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
References
- https://arstechnica.com/security/2025/05/signal-clone-used-by-trump-official-stops-operations-after-report-it-was-hacked/
- https://news.ycombinator.com/item?id=43909220
- https://www.theregister.com/2025/05/05/telemessage_investigating/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47729

