Is CVE-2021-28300 actively exploited?

No active exploitation of CVE-2021-28300 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-28300 be exploited remotely?

Yes. CVE-2021-28300 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-28300?

CVE-2021-28300 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-28300

CRITICAL

CVE-2021-28300

CWE-476Published: April 14, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

NULL Pointer Dereference in the "isomedia/track.c" module's "MergeTrack()" function of GPAC v0.5.2 allows attackers to execute arbitrary code or cause a Denial-of-Service (DoS) by uploading a malicious MP4 file.

NVD Source

Technical Analysis

CVE-2021-28300 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.