CVE-2019-20630Public exploit

Application crash via unchecked PMT descriptor lengths

Published Mar 24, 2020 · Updated Aug 5, 2024

Heap-based buffer over-read in GPAC before 0.8.0 allows context-dependent attackers to crash MP4Box via a crafted MP4 file. During MPEG-TS PMT IOD parsing, gf_m2ts_process_pmt trusts descriptor lengths and creates a bitstream whose BS_ReadByte path reads beyond the heap buffer. A user or consuming application must process the file; the demonstrated consequence is an application crash, not data disclosure or code execution.

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 context-dependent attackers to crash MP4Box via a crafted MP4 file. During MPEG-TS PMT IOD parsing, gf_m2ts_process_pmt trusts descriptor lengths and creates a bitstream whose BS_ReadByte path reads beyond the heap buffer. A user or consuming application must process the file; the demonstrated consequence is an application crash, not data disclosure or code execution.

The record

CVE
CVE-2019-20630
Published
Mar 24, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1204.002
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

5.5NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NVDAV: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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1204.002Malicious 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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