{"id":"CVE-2025-47729","published":"2025-05-08T14:15:26Z","modified":"2026-06-17T09:28:37Z","title":"TeleMessage TM SGNL Hidden Functionality Vulnerability","vendor":"TeleMessage","product":"TM SGNL","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":{"text":"The TeleMessage archiving backend, which the TM SGNL app (also known as Archive Signal) relies on, contains hidden functionality that keeps cleartext copies of users' messages, contrary to the vendor's end-to-end encryption claims for the path to the corporate archive. An attacker with network access to the backend who holds high-privilege credentials can read those stored messages, with no user interaction required and no effect on integrity or availability.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:15:29Z"},"cvss":{"score":4.9,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.00447,"percentile":0.38793,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2025-05-12","dueDate":"2025-06-02","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"Apply mitigations per vendor instructions. Absent mitigating instructions from the vendor, discontinue use of the product. ; https://nvd.nist.gov/vuln/detail/CVE-2025-47729","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-05-08","exploitedFirstSeen":"2025-05-08","ransomware":false,"evidence":[{"url":"https://www.cve.org/CVERecord?id=CVE-2025-47729","date":"2025-05-08"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-05-12"},{"url":"https://www.loginsoft.com/reports/annually/vulnerability-intelligence-report-2025","date":"2026-01-20"}],"evidenceTotal":3,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-912","name":"Hidden Functionality"}],"references":[{"url":"https://arstechnica.com/security/2025/05/signal-clone-used-by-trump-official-stops-operations-after-report-it-was-hacked/","tags":["Press/Media Coverage"]},{"url":"https://news.ycombinator.com/item?id=43909220","tags":["Press/Media Coverage"]},{"url":"https://www.theregister.com/2025/05/05/telemessage_investigating/","tags":["Press/Media Coverage"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47729","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: public-facing archiving backend exposes cleartext data","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"holds cleartext copies of messages from TM SGNL","start":53,"end":100}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1005","name":"Data from Local System","tactics":["collection"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: exposed archive yields readable message data collection","mappingType":"primary_impact","evidence":[{"from":"description","quote":"holds cleartext copies of messages from TM SGNL","start":53,"end":100}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2025-14003","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-14003","exploited":true,"exploitedSince":"2025-05-12","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1005"],"provenance":"ai"}],"timeline":[{"date":"2025-05-08","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47729","provenance":"source"},{"date":"2025-05-08","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.cve.org/CVERecord?id=CVE-2025-47729","provenance":"source"},{"date":"2025-05-12","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2025-05-12","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-14003","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":4},"priority":{"score":49.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 540 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":7.76,"detail":"percentile 0.3879"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":3.43,"detail":"base score 4.9"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}