CVE-2020-22673Public exploit

Service interruption via unreleased SENC sample allocation

Published Oct 12, 2021 · Updated Aug 4, 2024

Memory leak in GPAC MP4Box 0.8.0 allows attackers to interrupt MP4Box by supplying a crafted ISOBMFF file for processing. The senc_Parse function allocates a GF_CENCSampleAuxInfo object but does not release it when malformed SENC data produces an invalid SAI size. A user must cause MP4Box to open the file; the demonstrated input leaks 32 bytes per execution, and repeated processing can exhaust memory or crash the process.

CVSS severity5.5
Medium
EPSS probability0.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in GPAC MP4Box 0.8.0 allows attackers to interrupt MP4Box by supplying a crafted ISOBMFF file for processing. The senc_Parse function allocates a GF_CENCSampleAuxInfo object but does not release it when malformed SENC data produces an invalid SAI size. A user must cause MP4Box to open the file; the demonstrated input leaks 32 bytes per execution, and repeated processing can exhaust memory or crash the process.

The record

CVE
CVE-2020-22673
Published
Oct 12, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-401, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 12, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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