CVE-2026-21413

LibRaw · LibRaw

A heap-based buffer overflow exists in LibRaw's `lossless_jpeg_load_raw` function, which can be triggered by a specially crafted malicious file.

Executive summary

A heap buffer overflow vulnerability in LibRaw allows for potential remote code execution or application crashes via a specially crafted JPEG file.

Vulnerability

The vulnerability is a heap-based buffer overflow within the lossless_jpeg_load_raw functionality. An attacker can provide a malformed or malicious JPEG file that, when processed by an application using the vulnerable LibRaw version, triggers memory corruption.

Business impact

This flaw carries a critical CVSS score of 9.8. Successful exploitation could lead to application crashes or arbitrary code execution in the context of the user running the software. This presents a high risk for image-processing services and software that handles user-uploaded content.

Remediation

Immediate Action: Update to the latest version of LibRaw that addresses these specific commits.

Proactive Monitoring: Monitor systems for unexpected application crashes or processes consuming excessive memory when handling images.

Compensating Controls: Use sandbox environments or restricted user permissions for applications that process untrusted image files to limit the impact of a potential exploit.

Exploitation status

Public Exploit Available: No

Analyst recommendation

Organizations using libraries dependent on LibRaw should update their dependencies immediately. Given the ubiquity of image processing, testing software against the updated version is essential to ensure stability and security.