CVE-2026-38344

ffmpeg: FFmpeg: Denial of Service via crafted video file

Published Aug 27, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

No data.

Vendor Product Versions

Ffmpeg

Version	Status	Scheme	Platform
`—`	affected	—	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Ubuntu USN	USN-8915-1	FFmpeg vulnerabilities

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.460% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21583
https://nvd.nist.gov/vuln/detail/CVE-2026-38344
https://www.cve.org/CVERecord?id=CVE-2026-38344

History

Aug 31, 2026 6:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics	cvssV3_1 `{'score': 5.0, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H'}`	ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}` cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}`

Aug 28, 2026 12:15 PM Title updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Title	DoS via Null Pointer Dereference in FFmpeg Swscale	ffmpeg: FFmpeg: Denial of Service via crafted video file
References		https://nvd.nist.gov/vuln/detail/CVE-2026-38344 https://www.cve.org/CVERecord?id=CVE-2026-38344
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.0, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Aug 28, 2026 6:15 AM Title updated. First appearance in the feed. Weaknesses updated. Affected vendors updated View changes

Type	Values Removed	Values Added
Title		DoS via Null Pointer Dereference in FFmpeg Swscale
First Time appeared		Ffmpeg Ffmpeg ffmpeg
Weaknesses		CWE-476
Vendors & Products		Ffmpeg Ffmpeg ffmpeg

Aug 27, 2026 6:00 PM Description updated. Added references View changes

Type	Values Removed	Values Added
Description		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.
References		https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21583