EUVD-2026-67326
GHSA-36fh-g62v-wh23
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-delivered crafted video triggers the crash without authentication or user interaction; impact is availability-only with no scope change and no confidentiality or integrity effect.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
A NULL pointer dereference in the get_min_buffer_size function (/libswscale/slice.c) of FFmpeg N-122528-gdd2976b9e1 allows attackers to cause a Denial of Service (DoS) via supplying a crafted video file.
AnalysisAI
NULL pointer dereference in FFmpeg development snapshot N-122528-gdd2976b9e1 crashes the FFmpeg process when parsing a maliciously crafted video file via the get_min_buffer_size function in libswscale/slice.c. Any application or automated pipeline using this FFmpeg build to process untrusted video input is exposed to unauthenticated remote denial of service, as confirmed by the AV:N/AC:L/PR:N/UI:N CVSS vector. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerable code path in get_min_buffer_size is exercised when FFmpeg performs video scaling or color-space conversion on an input file using libswscale. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 score (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately captures the attack surface: any service accepting video uploads or streaming inputs built on this FFmpeg snapshot can be crashed without authentication or user interaction, and the low attack complexity means the crash is straightforward to reproduce. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to an FFmpeg build that includes the upstream fix for issue #21583 (https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21583); no specific patched release version is confirmed from available data, so the upstream issue tracker must be monitored for the merge commit or tagged release that resolves the NULL pointer dereference. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify any systems running FFmpeg development snapshot N-122528-gdd2976b9e1 or related development builds, especially in production video processing, streaming, or transcoding environments; document affected systems and immediately restrict them from processing untrusted video input. …
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Denial Of Service
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External POC / Exploit Code
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