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Known Exploited Vulnerability
5.3
MEDIUM CVSS 3.1
CVE-2025-48927
TeleMessage TM SGNL Initialization of a Resource with an Insecure Default Vulnerability - [Actively Exploited]
Description

The TeleMessage service through 2025-05-05 configures Spring Boot Actuator with an exposed heap dump endpoint at a /heapdump URI, as exploited in the wild in May 2025.

INFO

Published Date :

May 28, 2025, 5:15 p.m.

Last Modified :

Oct. 21, 2025, 11:17 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

TeleMessage TM SGNL contains an initialization of a resource with an insecure default vulnerability. This vulnerability relies on how the Spring Boot Actuator is configured with an exposed heap dump endpoint at a /heapdump URI.

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.

Notes :

It is recommended that mitigations be applied per vendor instructions if available. If these instructions cannot be located or if mitigations are unavailable, discontinue use of the product. ; https://nvd.nist.gov/vuln/detail/CVE-2025-48927

Affected Products

The following products are affected by CVE-2025-48927 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Smarsh telemessage
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Disable or restrict access to the Spring Boot Actuator heap dump endpoint.
  • Disable the heap dump endpoint if not needed.
  • Restrict access to the heap dump endpoint.
  • Update the Spring Boot Actuator configuration.
Public PoC/Exploit Available at Github

CVE-2025-48927 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-48927.

URL Resource
https://www.wired.com/story/how-the-signal-knock-off-app-telemessage-got-hacked-in-20-minutes/ Press/Media Coverage
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48927
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-48927 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-48927 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
ums91/CISA_BOT

CISA Bot is a GitHub bot that automatically monitors the Cybersecurity and Infrastructure Security Agency (CISA) Known Exploited Vulnerabilities (KEV) Catalog. When new vulnerabilities are published in the KEV, the bot creates GitHub issues in this repository with detailed information about each vulnerability.

Python

Updated: 2 months ago
2 stars 1 fork 1 watcher
Born at : Oct. 29, 2024, 10:19 a.m. This repo has been linked 206 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-48927 vulnerability anywhere in the article.

  • BleepingComputer
Hackers scanning for TeleMessage Signal clone flaw exposing passwords

Researchers are seeing exploitation attempts for the CVE-2025-48927 vulnerability in the TeleMessage SGNL app, which allows retrieving usernames, passwords, and other sensitive data. TeleMessage SGNL ... Read more

Published Date: Jul 18, 2025 (3 months, 1 week ago)
  • security.nl
Signal-kloon TeleMessage SGNL gebruikte kwetsbare Spring Boot Actuator

Bepaalde versies van TeleMessage SGNL, een versleutelde berichtenapp die specifiek is ontworpen voor overheidsorganisaties en grote bedrijven, zijn kwetsbaar voor cyberaanvallen. Een oude versie van S ... Read more

Published Date: Jul 18, 2025 (3 months, 1 week ago)
  • CybersecurityNews
Signal App Clone TeleMessage Vulnerability May Leak Passwords; Hackers Exploiting It

A critical security vulnerability in TeleMessageTM SGNL, an enterprise messaging system modeled after Signal, has been actively exploited by cybercriminals seeking to extract sensitive user credential ... Read more

Published Date: Jul 18, 2025 (3 months, 1 week ago)
  • Hackread - Latest Cybersecurity, Hacking News, Tech, AI & Crypto
New TeleMessage SGNL Flaw Is Actively Being Exploited by Attackers

TeleMessage SGNL, a made-in-Israel clone of the Signal app used by US government agencies and regulated businesses, has been found running with an outdated configuration that exposes sensitive interna ... Read more

Published Date: Jul 17, 2025 (3 months, 1 week ago)
  • The Register
CISA warns the Signal clone used by natsec staffers is being attacked, so patch now

The US security watchdog CISA has warned that malicious actors are actively exploiting two flaws in the Signal clone TeleMessage TM SGNL, and has directed federal agencies to patch the flaws or discon ... Read more

Published Date: Jul 02, 2025 (3 months, 4 weeks ago)
  • Cyber Security News
CISA Warns of TeleMessage TM SGNL Vulnerabilities Exploited in Attacks

CISA has issued an urgent warning regarding two critical vulnerabilities in TeleMessage TM SGNL that threat actors are currently exploiting in active attack campaigns. The vulnerabilities, tracked as ... Read more

Published Date: Jul 02, 2025 (3 months, 4 weeks ago)
  • TheCyberThrone
CISA Adds TelelMessage TM SGNL to KEV Catalog

Skip to contentCVE-2025-48927 — Insecure Spring Boot Heap Dump Exposure📌 Description:This vulnerability exists in TeleMessage TM SGNL due to an exposed Spring Boot Actuator /heapdump endpoint, accessi ... Read more

Published Date: Jul 02, 2025 (3 months, 4 weeks ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-48927 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 21, 2025

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48927
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 21, 2025

    Action Type Old Value New Value
    Removed Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48927
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 21, 2025

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48927
  • Initial Analysis by [email protected]

    Jul. 02, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:smarsh:telemessage:-:*:*:*:*:*:*:*
    Added Reference Type MITRE: https://www.wired.com/story/how-the-signal-knock-off-app-telemessage-got-hacked-in-20-minutes/ Types: Press/Media Coverage
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Jul. 02, 2025

    Action Type Old Value New Value
    Added Date Added 2025-07-01
    Added Due Date 2025-07-22
    Added 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.
    Added Vulnerability Name TeleMessage TM SGNL Initialization of a Resource with an Insecure Default Vulnerability
  • New CVE Received by [email protected]

    May. 28, 2025

    Action Type Old Value New Value
    Added Tag exclusively-hosted-service
    Added Description The TeleMessage service through 2025-05-05 configures Spring Boot Actuator with an exposed heap dump endpoint at a /heapdump URI, as exploited in the wild in May 2025.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    Added CWE CWE-1188
    Added Reference https://www.wired.com/story/how-the-signal-knock-off-app-telemessage-got-hacked-in-20-minutes/
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact