Samsung rlottie Library Suffers Numeric Truncation Vulnerability, Enabling Remote Code Execution
A numeric truncation vulnerability in Samsung's rlottie library, identified as CVE-2026-15551, allows remote attackers to execute arbitrary code on affected systems.
The Zero Day Initiative (ZDI) has disclosed a critical remote code execution vulnerability within Samsung's rlottie library, a component used for rendering Lottie animations. The vulnerability, tracked as CVE-2026-15551, carries a CVSS score of 7.8, indicating a high severity level.
This flaw stems from a numeric truncation issue that arises due to the library's failure to properly validate user-supplied data. This oversight leads to incorrect calculations before data is written into memory, creating an exploitable condition. Attackers can leverage this vulnerability to execute arbitrary code within the context of the current process, potentially leading to a full system compromise.
While the vulnerability requires interaction with the rlottie library, the specific attack vectors can vary significantly depending on how and where the library is implemented within Samsung products or other applications that utilize it. This broad applicability increases the potential impact of the vulnerability.
Samsung has acknowledged the issue and has released an update to address the vulnerability. The fix is available through a pull request on the rlottie GitHub repository, indicating that developers can integrate the patch into their own applications if they are using the library.
The disclosure timeline shows that the vulnerability was initially reported to the vendor on June 26, 2026, followed by a coordinated public release of the advisory on July 15, 2026. This timeline adheres to standard responsible disclosure practices, allowing vendors adequate time to develop and distribute patches.
The vulnerability was discovered and reported by Michael DePlante, associated with TrendAI and the Zero Day Initiative. The ZDI plays a crucial role in identifying and responsibly disclosing security flaws, working with vendors to ensure timely remediation.
Users and developers incorporating the rlottie library are strongly advised to update to the patched version as soon as possible to mitigate the risk of exploitation. The exact scope of affected Samsung products is not detailed in the advisory, but any implementation using the vulnerable version of rlottie is at risk.
This discovery highlights the ongoing need for rigorous security auditing of third-party libraries, especially those handling complex data formats like animations, as they can become vectors for widespread compromise if not properly secured.