What’s Vulnerable › Vulnerabilities
CVE-2025-62821
- Severity: critical (CVSS 9.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.1% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-06-19 · updated 2026-10-12
- Weakness: CWE-125
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.
Affected products
- Microsoft HEIF Image Extension: 1.2.22.0
References
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