This vulnerability in Samsung Pass, identified as CVE-2026-21057, is caused by improper input validation. It affects versions prior to 5.2.10.3 and allows local attackers with elevated privileges to perform out-of-bounds memory writes. The CVSS 4.0 base score is 6.8, indicating a medium severity. The vulnerability requires local access with high privileges and does not require user interaction. There is no vendor advisory or patch information currently available, and no known exploits in the wild have been reported.

Successful exploitation allows a local privileged attacker to write out-of-bounds memory, which may lead to memory corruption and potential compromise of the affected system. The attack requires local access with high privileges, limiting the attack surface. There is no indication of remote exploitation or user interaction needed.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local privileged access to trusted users only to reduce risk.