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MEDIUM · CVSS 4 CISA Known Exploited Vulnerability

CVE-2025-48928

TeleMessage TM SGNL Exposure of Core Dump File to an Unauthorized Control Sphere Vulnerability

TeleMessage TM SGNL

The TeleMessage service through 2025-05-05 is based on a JSP application in which the heap content is roughly equivalent to a "core dump" in which a password previously sent over HTTP would be included in this dump, as exploited in the wild in May 2025.

CVSS
4
MEDIUM
EPSS
0.6%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
28 May 2025
CWE-528, CWE-552

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 1 July 2025. US federal agencies were required to remediate it by 22 July 2025.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 0.6%, which is higher than 47.8% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Frequently asked questions

Is CVE-2025-48928 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2025-48928.

What does CVE-2025-48928 affect?

CVE-2025-48928 affects TeleMessage TM SGNL. The TeleMessage service through 2025-05-05 is based on a JSP application in which the heap content is roughly equivalent to a "core dump" in which a password previously sent over HTTP would be included in this dump, as exploited in the wild in May 2025.

How severe is CVE-2025-48928?

CVE-2025-48928 is rated MEDIUM with a CVSS base score of 4. EPSS puts the probability of exploitation in the next 30 days at 0.6%, higher than 47.8% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 22 July 2025.

How should organisations respond to CVE-2025-48928?

Apply the vendor patch for TeleMessage TM SGNL as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.