CVE-2025-48928 — TeleMessage TM SGNL Exposure of Core Dump File to an Unauthorized Control Sphere

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
TeleMessage	service	0

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2025-07-01. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2025-05-28T00:00:00.000Z
• Last modified: 2026-02-26T18:27:52.827Z
• Added to CISA KEV: 2025-07-01
• BOD 22-01 due: 2025-07-22

09References

• www.wired.com — https://www.wired.com/story/how-the-signal-knock-off-app-telemessage-got-hacked-…