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FFmpeg CVE-2026-38346

| EUVDEUVD-2026-67319 HIGH
Integer Overflow or Wraparound (CWE-190)
2026-08-27 mitre GHSA-j7m5-vgmq-4jfw
Denial Of Service Integer Overflow N A
7.5
CVSS 3.1 · Vendor: mitre
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Severity by source

Vendor (mitre) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
7.5 HIGH

Server-side video processing pipelines accept network-supplied files without authentication; impact is crash-only with no confidentiality or integrity effect.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Red Hat
6.5 MEDIUM
qualitative

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

4
Analysis Generated
Aug 28, 2026 - 20:49 vuln.today
CVSS changed
Aug 28, 2026 - 20:22 NVD
7.5 (HIGH)
CVE Published
Aug 27, 2026 - 00:00 cve.org
UNKNOWN (no severity yet)
CVE Published
Aug 27, 2026 - 00:00 cve.org
HIGH 7.5

DescriptionCVE.org

An integer overflow in the yuv2planeX_8_c() function (libswscale/output.c) of FFmpeg N-122528-gdd2976b9e1 allows attackers to cause a Denial of Service (DoS) via supplying a crafted video file.

AnalysisAI

Integer overflow in FFmpeg's libswscale/output.c (yuv2planeX_8_c function) allows a remote attacker to crash the FFmpeg process by supplying a crafted video file, causing denial of service in any pipeline that processes untrusted media. The affected build is development snapshot N-122528-gdd2976b9e1; stable release exposure is unconfirmed. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires the ability to submit or stream a video file to a system or service running FFmpeg snapshot N-122528-gdd2976b9e1 that processes the file through the libswscale YUV-to-planar conversion path. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 7.5 (High) reflects a network-accessible, unauthenticated attack vector with no user interaction required - consistent with server-side FFmpeg deployments that accept remote video input - but the actual exploitation risk is significantly lower than that score implies. … 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 No vendor-released patched version has been confirmed at time of analysis; the issue is tracked upstream at https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21584 and should be monitored for a fix commit or tagged release. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: inventory all systems running FFmpeg and confirm whether development snapshot N-122528-gdd2976b9e1 or affected stable releases are in use by consulting vendor build logs or security advisories. …

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Not-Affected

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CVE-2026-38346 vulnerability details – vuln.today
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