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Description

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.

PUBLISHED Reserved 2025-10-23 | Published 2026-06-19 | Updated 2026-06-22 | Assigner mitre

References

github.com/hyunjungg/CVE-2025-62821 exploit

github.com/hyunjungg/CVE-2025-62821

cve.org (CVE-2025-62821)

nvd.nist.gov (CVE-2025-62821)

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