This vulnerability (CVE-2025-71252) affects multiple Unisoc chipset models including SC7731E, SC9832E, SC9863A, and others, across Android 13 to 16. The issue is improper input validation in the modem IMS subsystem, which can be triggered remotely to cause a denial of service condition. The CVSS 3.1 base score is 7.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability (denial of service). No confidentiality or integrity impacts are reported. No vendor advisory or patch information is currently available.

Successful exploitation results in a remote denial of service on affected devices, potentially disrupting modem IMS functionality. There is no impact on confidentiality or integrity, and no additional execution privileges are required to exploit this vulnerability. No known exploits have been reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor vendor communications for updates. No specific mitigations or workarounds are documented at this time.