CVE-2020-22051Network attack vector

Service interruption via unreleased tile output frame

Published Jun 2, 2021 · Updated Aug 4, 2024

Memory exhaustion in FFmpeg 4.2 allows remote attackers to interrupt media processing by supplying a crafted MOV file. The tile video filter stores an output frame in TileContext.out_ref, but its uninit routine failed to release that allocation. The condition requires a user or automated system to process the crafted file through the tile filter; repeated triggering exhausts memory and interrupts that FFmpeg process.

CVSS severity6.5
Medium
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory exhaustion in FFmpeg 4.2 allows remote attackers to interrupt media processing by supplying a crafted MOV file. The tile video filter stores an output frame in TileContext.out_ref, but its uninit routine failed to release that allocation. The condition requires a user or automated system to process the crafted file through the tile filter; repeated triggering exhausts memory and interrupts that FFmpeg process.

The record

CVE
CVE-2020-22051
Published
Jun 2, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-401, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

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-401Missing Release of Memory after Effective Lifetime
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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