Is CVE-2026-33144 actively exploited?

No active exploitation of CVE-2026-33144 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33144 be exploited remotely?

No. CVE-2026-33144 requires local access to exploit.

What is the CVSS score of CVE-2026-33144?

CVE-2026-33144 has a CVSS score of 5.8 (MEDIUM).

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MEDIUM

CVE-2026-33144

CWE-787Published: March 20, 2026· Updated: Mar 23, 2026

5.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.9th

Official Description

GPAC is an open-source multimedia framework. Prior to commit 86b0e36, a heap-based buffer overflow (write) vulnerability was discovered in GPAC MP4Box. The vulnerability exists in the gf_xml_parse_bit_sequence_bs function in utils/xml_bin_custom.c when processing a crafted NHML file containing malicious <BS> (BitSequence) elements. An attacker can exploit this by providing a specially crafted NHML file, causing an out-of-bounds write on the heap. This issue has been via commit 86b0e36.

NVD Source

Technical Analysis

CVE-2026-33144 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.