CVE-2025-47729KEV · OVERDUECWE-912

TeleMessage TM SGNL Hidden Functionality Vulnerability

Low · published May 8, 2025

Patch now

The score understates this — it's already being exploited

CVSS calls it low at 1.9. It is confirmed in active exploitation. It sits in the 37.8th percentile for exploit probability.

510
days past CISA
deadline
CVSS v3.1
1.9
EPSS
0%
Percentile
37.8
In the wild
Confirmed
What it is

🚨 A hidden stash of plain-text messages lurks in the TeleMessage archive backend! Users expected top-notch end-to-end encryption, but it turns out their messages are as clear as day! Think of it like a cookbook that promises secret family recipes but instead delivers open pages with all the ingredients laid bare for anyone to see. The expectation of privacy is shattered when the cookbook is left open for everyone to browse! An attacker could exploit this flaw to access sensitive communications, leaving users vulnerable to privacy breaches. This could lead to unauthorized access to confidential information or corporate secrets, so while it's labeled low risk, it’s worth addressing promptly!

Put simply

Think of it like a cookbook that promises secret family recipes but instead delivers open pages with all the ingredients laid bare for anyone to see. The expectation of privacy is shattered when the cookbook is left open for everyone to browse! CVE-2025-47729 exposes cleartext copies of messages from the TM SGNL app within the TeleMessage archiving system, contrary to the promised encryption features. This means that sensitive data is stored unprotected and can be accessed without proper safeguards in place.

What to do

An attacker could exploit this flaw to access sensitive communications, leaving users vulnerable to privacy breaches. This could lead to unauthorized access to confidential information or corporate secrets, so while it's labeled low risk, it’s worth addressing promptly! Immediately review and patch the TeleMessage archiving backend to ensure proper encryption is enforced for stored messages. Verify that the system complies with the documented encryption standards and conduct an audit of existing messages to assess any risks. You've got this! Just follow these steps and secure those messages like a pro! 🛡️

The record
Technical detail
CVSS v3.1
1.9 · LOW
Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00447 · 37.8th percentile
Weakness
CWE-912 · Hidden Functionality
Published
2025-05-08T00:00Z
KEV added
2025-05-12 · due 2025-06-02
EPSS history
Timeline
  • 12 MAY 00:00Z
    Added to CISA KEV — remediate by Jun 2
    kev
  • 08 MAY 00:00Z
    The TeleMessage archiving backend through 2025-05-05 holds cleartext copies of messages from TM SGNL (aka Archive Signal) app users, which is different…
    cvelistv5