This vulnerability (CVE-2026-21048) is an out-of-bounds write issue classified under CWE-787 affecting Samsung Mobile Devices. It occurs in the parsing of the DNG image format within the libimagecodec.media.quram.so library. The flaw exists in versions before the SMR Jul-2026 Release 1. The CVSS 4.0 score is 8.4, indicating high severity with network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality and low impact on availability. No vendor advisory or patch information is currently available, and no exploits have been reported.

Successful exploitation allows remote attackers to write out-of-bounds memory, which can lead to memory corruption. This may result in denial of service or potentially code execution depending on the context, though specific impacts beyond memory corruption are not detailed. The vulnerability affects confidentiality with high impact and availability with low impact according to the CVSS vector.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided, users should monitor Samsung Mobile advisories for updates. No specific mitigations are indicated in the available data.