CVE-2025-47729

KEVTeleMessage TM SGNL Hidden Functionality Vulnerability

Description

TeleMessage TM SGNL contains a hidden functionality vulnerability in which the archiving backend holds cleartext copies of messages from TM SGNL application users.

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 3.1 vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N

PublishedMay 8, 2025

Last modifiedJun 17, 2026

Added to KEVMay 12, 2025

Remediation dueJun 2, 2025

References

arstechnica.com/security/2025/05/signal-clone-used-by-trump-official-stops-operations-after-report-it-was-hacked/Press/Media Coverage
news.ycombinator.com/item?id=43909220Press/Media Coverage
theregister.com/2025/05/05/telemessage_investigating/Press/Media Coverage
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47729US Government Resource

0 recent articles mention this CVE

Risk assessment · Medium

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 512 days
CVSS: 1.9 LOW
EPSS (30-day exploit probability): 0.45% · top 61% of all CVEs
Weakness: CWE-912

Recommended actions

1.Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.