Out-of-Bounds Read Vulnerability in ModelCloud GPTQModel Software
CVE-2026-86288

5.3MEDIUM

Key Information:

Vendor

Modelcloud

Status
Gptqmodel
Vendor
CVE Published:
7 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-86288?

A significant vulnerability exists in ModelCloud's GPTQModel software, specifically within the Triton dequantization kernel located in the gptqmodel/nn_modules/qlinear/tritonv2.py file. This flaw allows for out-of-bounds read due to improper handling of the argument g_idx, potentially enabling remote exploitation. The vulnerability was publicly disclosed, emphasizing the urgency for users to upgrade to version 7.3.0 or higher, which includes a necessary patch to resolve this issue. Users are strongly advised to implement the update promptly to secure their systems against potential attacks.

Affected Version(s)

GPTQModel 7.0

GPTQModel 7.1

GPTQModel 7.2.0

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-2026-86288 - Proof of Concept

References

https://vuldb.com/vuln/399447
vdb-entrytechnical-description
https://vuldb.com/vuln/399447/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86288
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
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

m00dy (VulDB User)
.