Samsung rlottie Library Suffers Stack-Based Buffer Overflow, Enabling Remote Code Execution
A critical stack-based buffer overflow vulnerability in Samsung's rlottie library, tracked as CVE-2026-91826, allows remote attackers to execute arbitrary code.
The Zero Day Initiative (ZDI) has disclosed a critical vulnerability affecting Samsung's rlottie library, a component used for rendering Lottie animations. The flaw, identified as ZDI-26-714 and assigned CVE-2026-91826, is a stack-based buffer overflow that could allow remote attackers to execute arbitrary code on vulnerable systems.
The vulnerability arises from the rlottie library's failure to properly validate the length of user-supplied data before copying it into a buffer on the stack. This oversight means that an attacker could provide oversized input, overwriting adjacent memory on the stack. Successful exploitation could lead to the execution of malicious code within the context of the process handling the rlottie library.
While the exact attack vectors may vary depending on how the rlottie library is integrated into different Samsung products and services, the core mechanism involves interacting with the library in a way that triggers the buffer overflow. This could potentially occur through specially crafted animation files or other data processed by the library.
The Common Vulnerability Scoring System (CVSS) has assigned this vulnerability a score of 7.8, classifying it as High severity. This score reflects the potential for remote exploitation without authentication and the impact of arbitrary code execution, which can lead to a full system compromise.
Samsung was notified of the vulnerability on August 25, 2026, and a coordinated public release of the advisory occurred on September 17, 2026. The disclosure timeline indicates a standard process for addressing such security issues, allowing vendors time to develop and distribute patches.
Details regarding specific affected versions of Samsung products or the exact scope of deployment for the vulnerable rlottie library are not yet fully detailed in the initial advisory. However, given the nature of the vulnerability and its potential for remote code execution, users and administrators are advised to remain vigilant for any security updates or patches released by Samsung.
This discovery underscores the ongoing importance of secure coding practices, particularly in libraries that handle complex data formats like animations. Buffer overflow vulnerabilities remain a persistent threat, and developers must prioritize robust input validation to prevent such weaknesses from being exploited.