CVE-2025-1816Public exploitNetwork attack vector

Memory consumption via unchecked IAMF parameter count

Published Mar 2, 2025 · Updated Mar 3, 2025

Memory leak in FFmpeg's IAMF file parser allows remote attackers to consume process memory through a crafted IAMF file. The audio_element_obu function reads num_parameters from the bitstream but did not reject values above two for channel representations before continuing parameter parsing. Processing attacker-controlled IAMF input is the gate, and the reported consequence is limited to process-memory consumption and availability degradation.

CVSS severity5.3
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Memory leak in FFmpeg's IAMF file parser allows remote attackers to consume process memory through a crafted IAMF file. The audio_element_obu function reads num_parameters from the bitstream but did not reject values above two for channel representations before continuing parameter parsing. Processing attacker-controlled IAMF input is the gate, and the reported consequence is limited to process-memory consumption and availability degradation.

The record

CVE
CVE-2025-1816
Published
Mar 2, 2025
Updated
Mar 3, 2025
Vendor
FFmpeg
Product
FFmpeg
Classifications
CWE-401, CWE-404, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 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=6e26f57f672b05e7b8b052007a83aef99dc81ccb

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FFmpeg · FFmpegversion=6e26f57f672b05e7b8b052007a83aef99dc81ccb

Published CVSS scores

4.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
5.0VulDB CNAAV:N/AC:L/Au:N/C:N/I:N/A:P
4.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

Public exploit references

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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