CVE-2025-62821
Microsoft HEIF Image Extensions Out-of-Bounds Read
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.
INFO
Published Date :
June 19, 2026, midnight
Last Modified :
June 19, 2026, 1:30 p.m.
Remotely Exploit :
No
Source :
mitre
Affected Products
The following products are affected by CVE-2025-62821
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Microsoft HEIF Image Extensions to the latest version.
- Apply vendor-supplied patches for the HEIF component.
- Validate buffer sizes before memory operations.
- Ensure correct data size reporting in image parsing.
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CVE-2025-62821 vulnerability anywhere in the article.