Exploited vulnerability · CISA KEV
Yes. CVE-2025-47729, TeleMessage TM SGNL Hidden Functionality Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 12 May 2025, 4 days after it was published. It affects TeleMessage TM SGNL. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
TeleMessage TM SGNL contains a hidden functionality vulnerability in which the archiving backend holds cleartext copies of messages from TM SGNL application users.
| Vendor | TeleMessage (3 exploited CVEs in KEV) |
| Product | TM SGNL |
| Vulnerability | TeleMessage TM SGNL Hidden Functionality Vulnerability |
| Weakness | CWE-912 |
| Published | 8 May 2025 |
| Added to KEV | 12 May 2025 |
| Reported by (CNA) | mitre |
Yes. CISA added CVE-2025-47729 to the Known Exploited Vulnerabilities catalog on 12 May 2025, which means there is reliable evidence of exploitation in the wild.
CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check TeleMessage's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected TM SGNL and watch it for signs of compromise.
Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in May 2025 · TeleMessage scorecard · act-now radar.
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