This vulnerability, tracked as CVE-2026-21065, is caused by improper input validation (CWE-20) leading to an out-of-bounds write in the libcodec2secqcelpdec.so component of Samsung Mobile Devices. It affects versions prior to the SMR August 2026 Release 1. The flaw allows a local attacker with low privileges to write beyond allocated memory, potentially causing memory corruption. The vulnerability has a CVSS 4.4 score with attack vector local, low attack complexity, no user interaction required, and low impacts on confidentiality, integrity, and availability. Samsung manages remediation for this cloud service, and a patch is available in the August 2026 security maintenance release.

The vulnerability allows local attackers with limited privileges to perform out-of-bounds memory writes, which could lead to memory corruption. The CVSS score of 4.4 indicates a medium impact with low confidentiality, integrity, and availability impacts. No known exploits are reported in the wild, reducing immediate risk.

A patch is available as part of the Samsung Mobile SMR August 2026 Release 1. Since this is a cloud-hosted service, Samsung manages the remediation server-side. Users and administrators should ensure devices are updated to the August 2026 SMR or later to mitigate this vulnerability.