CVE-2026-34545— OpenEXR: integer overflow lead to OOB in HTJ2K decoder

OpenEXR: integer overflow lead to OOB in HTJ2K decoder

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.7, an attacker providing a crafted .exr file with HTJ2K compression and a channel width of 32768 can write controlled data beyond the output heap buffer in any application that decodes EXR images. The write primitive is 2 bytes per overflow iteration or 4 bytes (by another path), repeating for each additional pixel past the overflow point. In this context, a heap write overflow can lead to remote code execution on systems. This issue has been patched in version 3.4.7.

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堆缓冲区溢出

OpenEXR 输入验证错误漏洞

OpenEXR是Academy Software Foundation开源的一种高动态范围图像（HDR）文件格式的开放标准。 OpenEXR 3.4.0至3.4.7之前版本存在输入验证错误漏洞，该漏洞源于攻击者提供具有HTJ2K压缩和通道宽度为32768的特制.exr文件，可以在解码EXR图像的任何应用程序中向输出堆缓冲区之外写入受控数据，可能导致远程代码执行。

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