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CVE-2025-62821

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft HEIF Image Extensions是美国Microsoft公司的一款HEIF图像扩展组件。 Microsoft HEIF Image Extensions 1.2.22.0版本存在安全漏洞，该漏洞可导致越界读取。

AI Predicted 5.5 Difficulty: Hard EPSS 1.05% · P63

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2025-62821

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft HEIF Image Extensions 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft HEIF Image Extensions是美国Microsoft公司的一款HEIF图像扩展组件。 Microsoft HEIF Image Extensions 1.2.22.0版本存在安全漏洞，该漏洞可导致越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2025-62821

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III. Intelligence Information for CVE-2025-62821

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Proof of Concept for CVE-2025-62821 (1)

Same Patch Batch · n/a · 2026-06-19 · 6 CVEs total

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CVE-2026-51846 Tenda AC7 安全漏洞
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CVE-2026-51845 Tenda AC7 缓冲区溢出漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2025-62821

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