hyunjungg/CVE-2025-62821

hyunjungg/CVE-2025-62821

Releases0
Microsoft HEIF Extension (msheif_store.dll) OOB-read

CVE History

CVEPublishedCVSS v3CVSS v2
9.1 CRITICAL

Microsoft HEIF Image Extensions 1.2.22.0 has an out-of-bounds read because CHEIFItemInfoEntry_GetDataSize can return success while leaving the reported data size as 0. This causes a caller to make a 1-byte allocation. Later, CopyPixels computes copy_size = stride * abs(roi_height) but does not check the source buffer length before a memmove call.