CVE-2019-20631

Name: CVE-2019-20631
Creator: NVD / NIST
Published: 2020-03-24T19:15:21.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.73%

Last modified Jun 17, 2026

CVE-2019-20631 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An issue was discovered in libgpac.a in GPAC before 0.8.0, as demonstrated by MP4Box. It contains an invalid pointer dereference in gf_list_count in utils/list.c that can cause a denial of service via a crafted MP4 file.. EPSS estimates a 0.73% chance of exploitation in the next 30 days.

Description

An issue was discovered in libgpac.a in GPAC before 0.8.0, as demonstrated by MP4Box. It contains an invalid pointer dereference in gf_list_count in utils/list.c that can cause a denial of service via a crafted MP4 file.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.73%

49.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-763

Affected Software

Vendor	Product	Versions
Gpac	Gpac	< 0.8.0

References

https://github.com/gpac/gpac/issues/1270Exploit, Third Party Advisory
https://github.com/gpac/gpac/issues/1270Exploit, Third Party Advisory

Timeline

Published: Mar 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20631?

How severe is CVE-2019-20631?

CVE-2019-20631 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20631?

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-2019-20631?

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

Scan your code now

Source: NVD / NIST