EUVD-2026-48741Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
User interaction required, so UI:R; no privileges needed; exploit leads to complete compromise of process.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
FFmpeg through 8.1.2, fixed in commit aafb5c6, contains a signed integer overflow vulnerability in the MACE6 audio decoder that allows attackers to corrupt heap memory by supplying a crafted CAF file with a malicious bytes_per_packet value. Attackers can craft a CAF file with oversized bytes_per_packet and frames_per_packet values in the desc chunk to trigger an integer overflow in mace_decode_frame() during output sample count computation, resulting in an undersized buffer allocation and heap out-of-bounds write that could enable code execution.
AnalysisAI
Heap-based buffer overflow in FFmpeg versions up to 8.1.2 via a crafted CAF file can allow remote code execution. Exploitation requires user interaction (opening a malicious file). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | User interaction is required (UI:R in CVSS 3.1) - the victim must open or process the malicious CAF file using the vulnerable FFmpeg decoder. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 3.1 score is 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), reflecting network delivery, low complexity, no privileges, but required user interaction, with high impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker distributes a specially crafted CAF audio file containing malicious bytes_per_packet and frames_per_packet values, e.g., as a media attachment or via a compromised website. When a victim or an automated process opens the file using a vulnerable FFmpeg build, the MACE6 decoder overflows an integer during buffer size calculation, leading to a heap out-of-bounds write and potential arbitrary code execution in the context of the FFmpeg process. |
| Remediation | Upgrade to an FFmpeg build that includes commit aafb5c655edc76a753275c383ebb139feb032718, or apply that patch directly. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Integer Overflow
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External POC / Exploit Code
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