Heap-Based Buffer Overflow in GPAC MP4Box Affects Local Access Rights
CVE-2026-90577

4.8MEDIUM

Key Information:

Vendor

GPAC

Status
Gpac
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90577?

A heap-based buffer overflow vulnerability has been identified in the GPAC component MP4Box, specifically within the gf_node_get_field function located in scenegraph/base_scenegraph.c. This flaw permits an attacker with local access to exploit the vulnerable function, potentially leading to memory corruption. As exploits for this vulnerability are now publicly available, it is crucial for users to upgrade to version abi-16.23, which contains a patch addressing this security risk (commit 49dee5cad329cfed310c1682703df7daa47df31a). Immediate action is recommended to mitigate potential threats.

Affected Version(s)

GPAC f1219cde

GPAC abi-16.23

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-90577 - Proof of Concept

References

https://vuldb.com/vuln/403162
vdb-entrytechnical-description
https://vuldb.com/vuln/403162/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90577
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

r1ck9 (VulDB User)
.