CVE-2025-47729
LOWCISA KEVDescription
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 v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 31% of all known CVEs.
TeleMessage TM SGNL Hidden Functionality Vulnerability
TeleMessage TM SGNL contains a hidden functionality vulnerability in which the archiving backend holds cleartext copies of messages from TM SGNL application users.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Remediation due: 2025-06-02
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
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-05.