CVE-2020-19718Public exploitNetwork attack vector

Application crash via unchecked atom buffer allocation

Published Jul 13, 2021 · Updated Aug 4, 2024

NULL pointer dereference in Bento4 1.5.1-628 allows attackers to crash mp42aac by processing a crafted MP4 file. AP4_HvccAtom::Create trusts the atom-declared buffer size and constructs AP4_DataBuffer without handling allocation failure, after which AP4_DataBuffer copies into a null destination. Exploitation requires mp42aac or another Bento4 consumer to parse the crafted file; the demonstrated consequence is process termination, not data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Bento4 1.5.1-628 allows attackers to crash mp42aac by processing a crafted MP4 file. AP4_HvccAtom::Create trusts the atom-declared buffer size and constructs AP4_DataBuffer without handling allocation failure, after which AP4_DataBuffer copies into a null destination. Exploitation requires mp42aac or another Bento4 consumer to parse the crafted file; the demonstrated consequence is process termination, not data disclosure or modification.

The record

CVE
CVE-2020-19718
Published
Jul 13, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1204.002, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 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

4.3NIST National Vulnerability DatabaseAV:N/AC:M/Au:N/C:N/I:N/A:P
6.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-476NULL Pointer Dereference
T1204.002User Execution: Malicious File
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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