CVE-2021-45831

Name: CVE-2021-45831
Creator: NVD / NIST
Published: 2022-01-05T20:15:07.95+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2021-45831 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A Null Pointer Dereference vulnerability exitgs in GPAC 1.0.1 in MP4Box via __strlen_avx2, which causes a Denial of Service.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

A Null Pointer Dereference vulnerability exitgs in GPAC 1.0.1 in MP4Box via __strlen_avx2, which causes a Denial of Service.

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

0.62%

45.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Gpac	Gpac	1.0.1

References

https://github.com/gpac/gpac/issues/1990Exploit, Issue Tracking, Third Party Advisory
https://www.debian.org/security/2023/dsa-5411
https://github.com/gpac/gpac/issues/1990Exploit, Issue Tracking, Third Party Advisory
https://www.debian.org/security/2023/dsa-5411

Timeline

Published: Jan 5, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45831?

A Null Pointer Dereference vulnerability exitgs in GPAC 1.0.1 in MP4Box via __strlen_avx2, which causes a Denial of Service.

How severe is CVE-2021-45831?

CVE-2021-45831 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45831?

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-2021-45831?

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

Scan your code now

Source: NVD / NIST