CVE-2022-40738

Name: CVE-2022-40738
Creator: NVD / NIST
Published: 2022-09-15T04:15:24.667+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2022-40738 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An issue was discovered in Bento4 through 1.6.0-639. A NULL pointer dereference occurs in AP4_DescriptorListWriter::Action in Core/Ap4Descriptor.h, called from AP4_EsDescriptor::WriteFields and AP4_Expandable::Write.. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

An issue was discovered in Bento4 through 1.6.0-639. A NULL pointer dereference occurs in AP4_DescriptorListWriter::Action in Core/Ap4Descriptor.h, called from AP4_EsDescriptor::WriteFields and AP4_Expandable::Write.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.59%

43.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Axiosys	Bento4	<= 1.6.0-639

References

https://github.com/axiomatic-systems/Bento4/issues/756Exploit, Issue Tracking, Third Party Advisory
https://github.com/axiomatic-systems/Bento4/issues/756Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Sep 15, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-40738?

How severe is CVE-2022-40738?

CVE-2022-40738 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2022-40738?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-40738?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST