GPAC MP4Box Local Access Vulnerability in Command Execution Function
CVE-2026-90685

2.4LOW

Key Information:

Vendor

GPAC

Status
Gpac
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90685?

A vulnerability exists in GPAC’s MP4Box, specifically within the lsr_exec_command_list function located in the laser/lsr_dec.c file. This flaw allows local users to manipulate command execution leading to assertion failures. Given that the exploit has been publicly disclosed, users are advised to upgrade to version abi-16.23 to mitigate potential security risks. The patch identifier associated with this vulnerability is afca1f1181668d85941d51ed1adf647807d5d975, emphasizing the importance of prompt software updates to maintain security.

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-2026-90685 - Proof of Concept

References

https://vuldb.com/vuln/403218
vdb-entrytechnical-description
https://vuldb.com/vuln/403218/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90685
third-party-advisory

CVSS V4

Score:
2.4
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dem0000000 (VulDB User)
.