CVE-2026-75142

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Source
https://cve.org/CVERecord?id=CVE-2026-75142
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-75142.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-75142
Downstream
CGA (38)
DEBIAN (1)
ECHO (1)
MGASA (1)
OESA (5)
openSUSE (5)
SUSE (2)
UBUNTU (1)
Related
openSUSE (5)
SUSE (2)
Published
2026-08-19T16:24:57Z
Modified
2026-09-30T08:16:42Z
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 Stack Buffer Overflow in MPEG-PS Muxer via mpegenc.c
Details

FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the overflow during MPEG-PS muxing.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75142.json"
}
References

Affected packages

Git / code.ffmpeg.org/FFmpeg/FFmpeg

Affected ranges

Type
GIT
Repo
https://code.ffmpeg.org/FFmpeg/FFmpeg
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9d786e4b5e9b8482651928574de33772aeee7be1

Affected versions

Other
N
n0.*
n0.11-dev
n0.12-dev
n0.8
n1.*
n1.1-dev
n1.2-dev
n1.3-dev
n2.*
n2.0
n2.1-dev
n2.2-dev
n2.3-dev
n2.4-dev
n2.5-dev
n2.6-dev
n2.7-dev
n2.8-dev
n2.9-dev
n3.*
n3.1-dev
n3.2-dev
n3.3-dev
n3.4-dev
n3.5-dev
n4.*
n4.1-dev
n4.2-dev
n4.3-dev
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
n9.*
n9.1-dev

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-75142.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "114639654182095632047070235152466210081",
                "249610853207856935291400141385738400980",
                "33200706439079886469472669656279397739",
                "39790311004898067853887037964310431355"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-75142-3eff7f84",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://code.ffmpeg.org/FFmpeg/FFmpeg@9d786e4b5e9b8482651928574de33772aeee7be1",
        "target": {
            "file": "libavformat/mpegenc.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "232601109389363913409863017295252059792",
            "length": 7932
        },
        "id": "CVE-2026-75142-dde7156e",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://code.ffmpeg.org/FFmpeg/FFmpeg@9d786e4b5e9b8482651928574de33772aeee7be1",
        "target": {
            "file": "libavformat/mpegenc.c",
            "function": "mpeg_mux_init"
        }
    }
]
vanir_signatures_modified 
"2026-09-30T08:16:42Z"