CVE-2024-35367Network attack vector

Memory disclosure or crash via undersized filter array

Published Nov 29, 2024 · Updated Nov 3, 2025

Out-of-bounds read in FFmpeg 6.1.1 allows remote attackers to disclose memory or crash PowerPC AltiVec builds while decoding VP8 video. The VP8 AltiVec horizontal subpixel loader can select index 3 from h_subpel_filters_outer, but that table contains only three elements indexed 0 through 2. Only PowerPC builds with AltiVec reach this implementation; the invalid read can expose adjacent process memory or terminate media processing.

CVSS severity9.1
Critical
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in FFmpeg 6.1.1 allows remote attackers to disclose memory or crash PowerPC AltiVec builds while decoding VP8 video. The VP8 AltiVec horizontal subpixel loader can select index 3 from h_subpel_filters_outer, but that table contains only three elements indexed 0 through 2. Only PowerPC builds with AltiVec reach this implementation; the invalid read can expose adjacent process memory or terminate media processing.

The record

CVE
CVE-2024-35367
Published
Nov 29, 2024
Updated
Nov 3, 2025
Vendor
FFmpeg
Product
FFmpeg
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FFmpeg · FFmpegversion=6.1.1

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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