Known exploited vulnerability
CVE-2025-47729
The short answer
CVE-2025-47729 affects TeleMessage archiving backend and is rated medium (CVSS 4.9). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-05-12: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-912.
Severity
4.9 medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Exploited (CISA KEV)
Yes, since May 12, 2025
Federal due date Jun 2, 2025
EPSS, next 30 days
0.45%
Higher than 40% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
archiving backend. NVD's record lists the exact affected versions.
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=43909220 Press/Media Coverage
- www.theregister.com/2025/05/05/telemessage_investigating/ Press/Media Coverage
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47729 US Government Resource
Questions
Is CVE-2025-47729 being exploited?
Yes. CISA added CVE-2025-47729 to its Known Exploited Vulnerabilities catalog on 2025-05-12, with a federal remediation due date of 2025-06-02.
How do I fix CVE-2025-47729?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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