CVEs / CVE-2025-47729
CVE-2025-47729: TeleMessage TM SGNL Hidden Functionality Vulnerability
- Known exploited in the CISA KEV catalog since 12 May 2025
- medium 4.9 CVSS 3.1 (NVD)
- EPSS 0.44% chance of exploitation in the next 30 days, higher than 38% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
TeleMessage TM SGNL contains a hidden functionality vulnerability in which the archiving backend holds cleartext copies of messages from TM SGNL application users.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| TeleMessage archiving backend | up to and including 2025-05-05 | — |
Exploitation
| In CISA KEV since | 12 May 2025 |
|---|---|
| Due date for US federal agencies | 2 Jun 2025 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 4.9 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NScored by NVD |
|---|---|
| Weakness | CWE-912 |
References
- CVE-2025-47729 on NVD
- CVE-2025-47729 in the CISA KEV catalog
- https://arstechnica.com/security/2025/05/signal-clone-used-by-trump-official-stops-operations-after-report-it-was-hacked/ Press/Media Coverage
- https://news.ycombinator.com/item?id=43909220 Press/Media Coverage
- https://www.theregister.com/2025/05/05/telemessage_investigating/ Press/Media Coverage
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47729 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.