CVE-2025-62821
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.1epss 1.1%
from disclosure to weapon0 days
Published on NVDJun 19
1st PoCSep 25
exploitation probability
1.1%top 39% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Affected products
n/a · n/apublic PoCs found — 1
githubgithub.com/hyunjungg/CVE-2025-62821★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.