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FFmpeg CVE-2026-38348

| EUVDEUVD-2026-67317 HIGH
Integer Overflow or Wraparound (CWE-190)
2026-08-27 mitre GHSA-f99v-5v4x-h48m
Integer Overflow Denial Of Service N A Red Hat Suse
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 image processing requires no authentication or interaction; impact is DoS only with no confidentiality or integrity loss, matching the provided vector.

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
5.5 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 - 20:50 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 libswscale/utils.c component 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/utils.c component, present in development snapshot N-122528-gdd2976b9e1, allows unauthenticated remote attackers to crash any application relying on that component for image scaling by supplying a specially crafted image file. The CVSS 7.5 High rating reflects a network-reachable, zero-authentication denial-of-service path, but the EPSS score of 0.15% at the 4th percentile indicates negligible observed exploitation activity. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
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Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation The target application must accept attacker-supplied image files and process them using FFmpeg's libswscale component, specifically the utils.c scaling logic - server-side automated processing pipelines (transcoding APIs, thumbnail generators, media ingest services) are the primary exposure surface. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.5 High vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) places this in the high-severity tier based purely on network reachability and absence of authentication requirements, but several signals substantially moderate the real-world priority. … 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 Operators running FFmpeg development builds should consult the FFmpeg issue tracker (https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21588) to identify whether a fix commit has been applied downstream of N-122528-gdd2976b9e1; no independently confirmed patched release version is available from the provided data. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, inventory all applications and infrastructure using FFmpeg, particularly those processing user-uploaded or external image sources. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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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-2026-38348 vulnerability details – vuln.today
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