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    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-75146",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-08-17T18:39:57.662Z",
        "datePublished": "2026-08-19T16:28:19.356Z",
        "dateUpdated": "2026-08-20T14:56:11.985Z"
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                "dateUpdated": "2026-08-19T16:28:19.356Z"
            },
            "title": "FFmpeg Out-of-Bounds Read in DASH Demuxer via dashdec.c",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "FFmpeg before commit 65b0dab contains an out-of-bounds read in the DASH demuxer (libavformat/dashdec.c). When a live DASH manifest is refreshed with a startNumber that is lower than the previous value, the current sequence number is driven negative. The fragment retrieval function checked only the upper bound before indexing the fragments array, allowing a negative index to be used and causing an out-of-bounds read. A malicious or misconfigured DASH server can trigger this by serving a live manifest with a decreasing startNumber across a manifest refresh."
                }
            ],
            "tags": [
                "x_open-source"
            ],
            "datePublic": "2026-08-04T00:00:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-125",
                            "description": "Out-of-bounds Read",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "FFmpeg",
                    "product": "FFmpeg",
                    "repo": "https://code.ffmpeg.org/FFmpeg/FFmpeg",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "65b0dab903e5975e036b30ecc58f5935d4f151e0",
                            "versionType": "git"
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                    ],
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:github/FFmpeg/FFmpeg"
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                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
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                        "baseSeverity": "HIGH",
                        "baseScore": 7.2,
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                        "privilegesRequired": "NONE",
                        "userInteraction": "REQUIRED",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH",
                        "version": "3.1",
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            ],
            "references": [
                {
                    "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24093",
                    "name": "Pull Request",
                    "tags": [
                        "issue-tracking"
                    ]
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                {
                    "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/65b0dab903e5975e036b30ecc58f5935d4f151e0",
                    "name": "Patch Commit",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-read-in-dash-demuxer-via-dashdec-c",
                    "tags": [
                        "third-party-advisory"
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Joshua Rogers (AISLE Research)",
                    "type": "finder"
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "x_generator": {
                "engine": "vulncheck"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-20T14:55:54.873673Z",
                                "id": "CVE-2026-75146",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
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                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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}