CVE-2026-70632

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Source
https://cve.org/CVERecord?id=CVE-2026-70632
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70632.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-70632
Downstream
Related
Published
2026-08-06T21:26:17.466Z
Modified
2026-09-05T09:55:55.547300886Z
Severity
  • 8.5 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
FFmpeg 4.4 < 9.0 Heap Out-of-Bounds Write in CFHD Decoder via AVI Demuxing
Details

FFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhddecode() function fails to enforce the non-Bayer logical output-width invariant in the transform-type-2 reconstruction path, causing horizfilter_clip() to write oversized 16-bit sample rows far beyond the allocated output frame buffer, which can be escalated to arbitrary code execution via overwrite of a live cleanup callback pointer.

Database specific 
{
    "cwe_ids": [
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70632.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "4.4"
                },
                {
                    "fixed": "9.0"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "introduced": "4.4"
                },
                {
                    "fixed": "9.0"
                }
            ]
        }
    ],
    "cna_assigner": "VulnCheck"
}
References

Affected packages

Git / git.ffmpeg.org/ffmpeg.git

Affected ranges

Type
GIT
Repo
https://git.ffmpeg.org/ffmpeg.git
Events
Introduced
c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8
Fixed
d32b387f2b0a484599d4587d651891f0c63c4238
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "4.4"
        },
        {
            "fixed": "9"
        }
    ]
}

Affected versions

n4.*
n4.4-dev
n4.5-dev
n5.*
n5.1-dev
n5.2-dev
n6.*
n6.1-dev
n6.2-dev
n7.*
n7.1-dev
n7.2-dev
n8.*
n8.1-dev
n8.2-dev

Database specific

vanir_signatures 
[
    {
        "digest": {
            "line_hashes": [
                "195688002327067465305765588221319015242",
                "309288324102816931239308632619998175099",
                "208198982209572275918917816535860937592",
                "231555107084919634110330250551123341431",
                "168010716807985158773806969924424380093",
                "204275076296265396432751791373547480918",
                "230743041424433407137898346131591666852",
                "121645463046297428931382762675379161144",
                "64606519716965107927271010747911179138",
                "73767112427060832523002513151109600034",
                "219167262246002076747638059747044171272"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "id": "CVE-2026-70632-bded55e5",
        "signature_version": "v1",
        "source": "https://git.ffmpeg.org/ffmpeg.git@d32b387f2b0a484599d4587d651891f0c63c4238",
        "signature_type": "Line",
        "target": {
            "file": "libavformat/rawutils.c"
        }
    },
    {
        "target": {
            "file": "libavformat/rawutils.c",
            "function": "ff_reshuffle_raw_rgb"
        },
        "id": "CVE-2026-70632-bfd07778",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "function_hash": "95585342688571589449512382820310933372",
            "length": 1096.0
        },
        "signature_type": "Function",
        "source": "https://git.ffmpeg.org/ffmpeg.git@d32b387f2b0a484599d4587d651891f0c63c4238"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70632.json"
vanir_signatures_modified 
"2026-09-03T08:03:54Z"

Git / github.com/ffmpeg/ffmpeg

Affected ranges

Type
GIT
Repo
https://github.com/ffmpeg/ffmpeg
Events
Introduced
c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8
Fixed
d32b387f2b0a484599d4587d651891f0c63c4238
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "4.4"
        },
        {
            "fixed": "9"
        }
    ]
}

Affected versions

n4.*
n4.4-dev
n4.5-dev
n5.*
n5.1-dev
n5.2-dev
n6.*
n6.1-dev
n6.2-dev
n7.*
n7.1-dev
n7.2-dev
n8.*
n8.1-dev
n8.2-dev

Database specific

vanir_signatures 
[
    {
        "target": {
            "file": "libavformat/rawutils.c",
            "function": "ff_reshuffle_raw_rgb"
        },
        "deprecated": false,
        "id": "CVE-2026-70632-2a07b12d",
        "signature_version": "v1",
        "source": "https://github.com/ffmpeg/ffmpeg/commit/d32b387f2b0a484599d4587d651891f0c63c4238",
        "signature_type": "Function",
        "digest": {
            "function_hash": "95585342688571589449512382820310933372",
            "length": 1096.0
        }
    },
    {
        "target": {
            "file": "libavformat/rawutils.c"
        },
        "id": "CVE-2026-70632-5f4309c9",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "195688002327067465305765588221319015242",
                "309288324102816931239308632619998175099",
                "208198982209572275918917816535860937592",
                "231555107084919634110330250551123341431",
                "168010716807985158773806969924424380093",
                "204275076296265396432751791373547480918",
                "230743041424433407137898346131591666852",
                "121645463046297428931382762675379161144",
                "64606519716965107927271010747911179138",
                "73767112427060832523002513151109600034",
                "219167262246002076747638059747044171272"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/ffmpeg/ffmpeg/commit/d32b387f2b0a484599d4587d651891f0c63c4238"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70632.json"
vanir_signatures_modified 
"2026-09-03T08:03:54Z"