CVE-2019-20629Public exploit

Application crash via PMT stream-type over-read

Published Mar 24, 2020 · Updated Aug 5, 2024

Heap-based buffer over-read in GPAC before 0.8.0 allows local users to crash MP4Box by processing a crafted MP4 file. The gf_m2ts_process_pmt function reads es->stream_type outside the guarded elementary-stream branch; the patch moves those reads inside that branch. Exploitation requires a crafted file to be processed with MP4Box, and the demonstrated consequence is termination of that application.

CVSS severity5.5
Medium
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer over-read in GPAC before 0.8.0 allows local users to crash MP4Box by processing a crafted MP4 file. The gf_m2ts_process_pmt function reads es->stream_type outside the guarded elementary-stream branch; the patch moves those reads inside that branch. Exploitation requires a crafted file to be processed with MP4Box, and the demonstrated consequence is termination of that application.

The record

CVE
CVE-2019-20629
Published
Mar 24, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

5.5NIST NVDCVSS:3.1/AV:L/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 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-125Out-of-bounds Read

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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