CVE-2026-21045 Samsung Mobile CVE debrief

Who should care

This vulnerability affects users of Samsung devices with software prior to SMR Jul-2026 Release 1. Users of these devices should apply the security update as soon as possible to prevent potential attacks. Operators, platform administrators, vulnerability management teams, and security teams should review the affected scope and severity to prioritize patching and mitigation efforts.

Technical summary

The vulnerability is caused by an out-of-bounds write in the libimagecodec.media.quram.so library when parsing TIFF format. This can allow remote attackers to write out-of-bounds memory, potentially leading to arbitrary code execution or denial of service. The affected product is Samsung devices with software prior to SMR Jul-2026 Release 1.

Defensive priority

High

Recommended defensive actions

• Apply the security update provided by the vendor as soon as possible
• Use secure coding practices when developing software
• Monitor for and respond to potential attacks on affected systems
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record was published on 2026-07-10T05:16:35.177Z and last modified on 2026-07-10T17:56:00.910Z. The NVD entry is currently Deferred. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The libimagecodec.media.quram.so library is used for parsing TIFF format, and an out-of-bounds write vulnerability exists, potentially allowing remote attackers to write out-of-bounds memory.

Official resources