Information Exposure Vulnerability in TeleMessage by TeleMessage
CVE-2025-48928

4MEDIUM

Key Information:

Vendor

Telemessage

Status
Service
Vendor
CVE Published:
28 May 2025

Badges

👾 Exploit Exists🦅 CISA Reported📰 News Worthy

What is CVE-2025-48928?

The TeleMessage service, functioning through a JSP application, has a significant vulnerability that allows the heap content of the application to be accessed. This vulnerability can expose sensitive information, such as passwords transmitted over HTTP, resembling a core dump. Exploits utilizing this weakness have been active in the wild since May 2025, raising serious security concerns for users of the service.

CISA has reported CVE-2025-48928

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2025-48928 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation 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.

Affected Version(s)

service 0 <= 2025-05-05

News Articles

favicon imageBankInfoSecurity

Attackers Target Legacy Code in TeleMessage's Signal Clone

Attackers are actively attempting to exploit a vulnerability that exists in older versions of the Signal message app clone TeleMessage TM SGNL, built by Smarsh to

5 days ago

favicon imageThe Register

CISA tells TeleMessage users to patch after active exploits

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 discontinue...

3 weeks ago

favicon imageCyberSecurityNews

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 are currently being exploited.

3 weeks ago

References

https://www.wired.com/story/how-the-signal-knock-off-app-...

EPSS Score

9% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 📰

    First article discovered by SecurityWeek

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-48928 : Information Exposure Vulnerability in TeleMessage by TeleMessage