PT-2026-50877 · Microsoft · Heif Image Extension
CVE-2025-62821
·
Published
2026-06-19
·
Updated
2026-06-30
CVSS v3.1
9.1
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Microsoft HEIF Image Extensions version 1.2.22.0
Description
An out-of-bounds read occurs because the
CHEIFItemInfoEntry GetDataSize() function can return a success status while leaving the reported data size at 0. This leads a caller to perform a 1-byte allocation. Subsequently, the CopyPixels() function calculates copy size using the formula stride * abs(roi height) but fails to verify the source buffer length before executing a memmove call.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Heif Image Extension