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

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-07-01

[ Description ]Official description

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.

CISA: 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.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 22 Jul 2025): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• www.wired.com/story/how-the-signal-knock-off-app-telemessage-got-hacked-in-20-minutesPress/Media Coverage
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource