This vulnerability (CVE-2025-71255) affects the modem IMS functionality in a range of Unisoc chipsets (SC7731E, SC9832E, SC9863A, T310, T610, T618, T7200, T7225, T7250, T7255, T7280, T7300, T8100, T9100, T8200, T8300) running Android 13 to 16. It is caused by improper input validation (CWE-20) that could be triggered remotely, resulting in 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 an impact limited to availability (denial of service). No official fix or patch information is currently available from the vendor.

Successful exploitation of this vulnerability could cause a remote denial of service on affected devices, impacting availability of modem IMS services. There is no impact on confidentiality or integrity, and no additional execution privileges are required to trigger the issue. No known exploits have been reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is currently documented, organizations should monitor vendor communications for updates. No specific workaround is provided at this time.