TeleMessage TM SGNL Initialization of a Resource with an Insecure Default Vulnerability - Recently added to CISA KEV.
Description
TeleMessage TM SGNL Initialization of a Resource with an Insecure Default Vulnerability - Recently added to CISA KEV.
AI Analyst Comment
Remediation
FEDERAL DEADLINE: July 21, 2025 (17 days). Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA KEV Details
Deadline: July 21, 2025
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.
Description Summary:
TeleMessage TM SGNL services through May 2025 expose a Spring Boot Actuator heap dump endpoint, allowing unauthorized access to sensitive application data.
Executive Summary:
A critical vulnerability in TeleMessage TM SGNL allows unauthenticated access to sensitive heap dump data and is currently being actively exploited in the wild.
Vulnerability Details
CVE-ID: CVE-2025-48927
Affected Software: TeleMessage TM SGNL
Affected Versions: TeleMessage service: 0 through 2025-05-05
Vulnerability: This vulnerability involves the insecure initialization of a Spring Boot Actuator resource, specifically exposing a heap dump endpoint at the /heapdump URI. The flaw is exploitable by unauthenticated remote attackers.
Business Impact
The exposure of heap dump data presents a severe risk of information disclosure, as these files often contain credentials, session tokens, and sensitive internal application state. Given the CVSS score of 9.5 and the confirmed active exploitation in the wild, this vulnerability carries a critical risk of data exfiltration and potential lateral movement within the network. Immediate remediation is required to prevent unauthorized access to sensitive enterprise communications data.
Remediation Plan
Immediate Action: Restrict access to the /heapdump endpoint immediately or disable the Spring Boot Actuator exposure per the vendor instructions to prevent further unauthorized access.
Proactive Monitoring: Review web server and application logs for suspicious access patterns targeting the /heapdump URI from unknown or unauthorized external IP addresses.
Compensating Controls: Deploy or update Web Application Firewall rules to block all external requests to sensitive actuator endpoints, including /heapdump, until a permanent patch is verified and applied.
Exploitation Status
Public Exploit Available: Unknown
Analyst Notes: This vulnerability is confirmed to be actively exploited in the wild as of June 30, 2025. The inclusion of this CVE in the CISA Known Exploited Vulnerabilities catalog underscores the high degree of risk and the necessity for immediate mitigation actions.
Analyst Recommendation
The critical nature of this vulnerability, combined with verified active exploitation, necessitates immediate attention from security teams. Organizations must prioritize restricting access to the affected endpoint to mitigate the risk of data compromise. Ensure that all systems are reviewed and that security configurations are hardened to prevent similar exposures in the future.