TeleMessage TM SGNL Exposure of Core Dump File to an Unauthorized Control Sphere Vulnerability
TeleMessage TM SGNL contains an exposure of core dump file to an unauthorized control sphere Vulnerability. This vulnerability 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.
A local attacker, without authentication, can achieve partial data exposure. Federal agencies are required to remediate by 2025-07-22 under CISA BOD 22-01.
This is a Software Vulnerability (CWE-528) (CWE-528) vulnerability in 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. Exploitation requires local access, low attack complexity, no authentication required, and no user interaction required.
Probably yes if any of these apply:
Active exploitation documented in the wild. Threat-research write-up: https://www.wired.com/story/how-the-signal-knock-off-app-telemessage-got-hacked-in-20-minutes/
Manual remediation steps
Apply the Vendor Patch
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog — apply the vendor's security update as soon as possible.
CISA 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.
References
No tested PowerShell script for this entry yet. We’re prioritising automation based on user demand.
References