CVE-2019-20630

Name: CVE-2019-20630
Creator: NVD / NIST
Published: 2020-03-24T19:15:21.07+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.91%

Last modified Jun 17, 2026

CVE-2019-20630 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 a heap-based buffer over-read in BS_ReadByte (called from gf_bs_read_bit) in utils/bitstream.c that can cause a denial of service via a crafted MP4 file.. EPSS estimates a 0.91% 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 a heap-based buffer over-read in BS_ReadByte (called from gf_bs_read_bit) in utils/bitstream.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

0.91%

55.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Gpac	Gpac	< 0.8.0

References

https://github.com/gpac/gpac/commit/1ab4860609f2e7a35634930571e7d0531297e090Patch, Third Party Advisory
https://github.com/gpac/gpac/issues/1268Exploit, Third Party Advisory
https://github.com/gpac/gpac/commit/1ab4860609f2e7a35634930571e7d0531297e090Patch, Third Party Advisory
https://github.com/gpac/gpac/issues/1268Exploit, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2019-20630?

How severe is CVE-2019-20630?

CVE-2019-20630 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20630?

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-2019-20630?

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

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Source: NVD / NIST