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PatchSiren cyber security CVE debrief

CVE-2025-48928 TeleMessage CVE debrief

CVE-2025-48928 is a TeleMessage TM SGNL vulnerability described as an exposure of a core dump file to an unauthorized control sphere. CISA has added it to the Known Exploited Vulnerabilities catalog, which means defenders should treat it as an actively exploited issue and prioritize mitigation. The supplied public record does not include a CVSS score or deeper technical breakdown, so operational response should rely on the vendor’s guidance and the CISA KEV remediation instructions.

Vendor
TeleMessage
Product
TM SGNL
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2025-07-01
Original CVE updated
2025-07-01
Advisory published
2025-07-01
Advisory updated
2025-07-01

Who should care

Security teams, endpoint and application owners, and cloud/service administrators responsible for TeleMessage TM SGNL deployments should care most. Because this issue is KEV-listed, incident response, vulnerability management, and patch/mitigation owners should prioritize it ahead of non-exploited advisories.

Technical summary

The available source corpus identifies CVE-2025-48928 as a core dump file exposure issue in TeleMessage TM SGNL. A core dump can contain sensitive runtime data, so unauthorized access may expose information that should not be readable by untrusted users or processes. Beyond that description, the supplied official sources do not provide additional technical detail, exploit mechanics, or affected-version specifics.

Defensive priority

High. CISA has classified this as a Known Exploited Vulnerability with a remediation due date of 2025-07-22, so it should be handled on an urgent timeline. If vendor mitigations are unavailable or cannot be applied promptly, CISA directs organizations to discontinue use of the product.

Recommended defensive actions

  • Identify all TeleMessage TM SGNL instances and confirm whether they are exposed to the affected condition.
  • Apply vendor-provided mitigations or updates as soon as they are available.
  • Follow CISA KEV guidance for cloud services and prioritize remediation before the KEV due date of 2025-07-22.
  • If no effective mitigation is available, remove or discontinue use of the product per CISA guidance.
  • Review logs and access controls for any unexpected access to core dump artifacts or related diagnostic files.
  • Monitor vendor and CISA advisories for any newly published affected-version or mitigation details.

Evidence notes

This debrief is based only on the supplied official and authority sources: the CISA KEV record, the CVE record link, and the NVD record link referenced in the corpus. The corpus provides the vulnerability title, vendor/product identification, KEV status, date added, and due date, but not a CVSS score or a richer technical advisory. Accordingly, the summary avoids unsupported claims about exploit method, impact scope, or affected versions.

Official resources

CVE-2025-48928 was published on 2025-07-01 and is listed in CISA’s Known Exploited Vulnerabilities catalog on the same date in the supplied corpus. CISA’s stated due date for remediation is 2025-07-22.