Samsung Galaxy S25 TIFF File Processing Heap-based Buffer Overflow Remote Code Execution Vulnerability (CVE-2026-21045)

CVE number – CVE-2026-21045

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Samsung Galaxy S25 devices.

User interaction may be required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of TIFF files.

The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer.

An attacker can leverage this vulnerability to execute code in the context of the current process.

Samsung has issued an update to correct this vulnerability. More details can be found at:
https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=07