CVE-2025-62821_CVE-2025-62821

{
    "lastseen": "",
    "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.",
    "published": "2026-06-19T00:00:00.000Z",
    "modified": "2026-06-22T17:16:13.925Z",
    "type": "cve",
    "title": "CVE-2025-62821",
    "source": "mitre",
    "references": "https://github.com/hyunjungg/CVE-2025-62821",
    "id": "CVE-2025-62821",
    "bulletinFamily": "",
    "cwe": [
        "CWE-125"
    ],
    "cvelist": null,
    "sourceData": "n/a n/a n/a",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Microsoft HEIF Image Extensions",
    "version": "1.2.22.0",
    "vendor": "Microsoft",
    "ai_description": "Out-of-bounds read vulnerability in Microsoft HEIF Image Extensions due to incorrect handling of data size by CHEIFItemInfoEntry_GetDataSize, potentially leading to a 1-byte allocation and subsequent memmove call without checking the source buffer length.",
    "ai_severity": "Critical",
    "ai_vendor": "Microsoft",
    "ai_product": "Microsoft HEIF Image Extensions",
    "ai_version": "1.2.22.0",
    "ai_score": 9.1
}