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FFmpeg CVE-2026-38349

| EUVDEUVD-2026-67321 HIGH
Integer Overflow or Wraparound (CWE-190)
2026-08-27 mitre GHSA-4f39-h9cc-q7g2
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

Network-accessible automated media processors require no authentication or user interaction; impact is availability-only with no scope change or confidentiality/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
4.3 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Red Hat
7.5 HIGH
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 - 20:50 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 hScale16To19_c() function (libswscale/output.c) of FFmpeg N-122528-gdd2976b9e1 allows attackers to cause a Denial of Service (DoS) via supplying a crafted image file.

AnalysisAI

Integer overflow in FFmpeg's libswscale library allows any application or service processing attacker-controlled image files to be crashed via a specially crafted input, causing a Denial of Service. The vulnerable function hScale16To19_c() in output.c is affected in build N-122528-gdd2976b9e1; the CVSS vector (AV:N/AC:L/PR:N/UI:N) reflects worst-case exposure in automated media-processing services. …

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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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Vulnerability AssessmentAI

Exploitation The target application or service must process a crafted image file using FFmpeg's libswscale library, specifically triggering the hScale16To19_c() horizontal scaling function path. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) reflects a plausible worst-case: an unauthenticated remote attacker supplying a file to a network-facing FFmpeg-based service with no required interaction. … 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 independently confirmed at time of analysis; the primary reference points to an open issue report at https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21592 rather than a patch release. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify all production instances of FFmpeg libswscale, document versions in use (particularly builds prior to N-122528), and map which services process user-supplied images. …

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Same weakness CWE-190 – Integer Overflow or Wraparound

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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-2026-38349 vulnerability details – vuln.today
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