CVE-2026-86288Public exploitNetwork attack vector

GPU crash and disclosure via unchecked checkpoint index

Published Sep 7, 2026 · Updated Sep 8, 2026

Out-of-bounds read in ModelCloud GPTQModel 7.0 through 7.2.0 allows attackers to crash GPU inference via a crafted checkpoint. The Triton dequantization kernel uses checkpoint-supplied g_idx values to index scales and qzeros buffers without verifying that the resolved group is below num_groups. Exploitation requires loading and running an untrusted desc_act checkpoint; it can crash the CUDA context and expose adjacent GPU memory through dequantized weights.

CVSS severityUnavailable
Unscored
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in ModelCloud GPTQModel 7.0 through 7.2.0 allows attackers to crash GPU inference via a crafted checkpoint. The Triton dequantization kernel uses checkpoint-supplied g_idx values to index scales and qzeros buffers without verifying that the resolved group is below num_groups. Exploitation requires loading and running an untrusted desc_act checkpoint; it can crash the CUDA context and expose adjacent GPU memory through dequantized weights.

The record

CVE
CVE-2026-86288
Published
Sep 7, 2026
Updated
Sep 8, 2026
Vendor
ModelCloud
Product
GPTQModel
Classifications
CWE-119, CWE-125, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0
  2. Affected versionversion=7.1
  3. Affected versionversion=7.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ModelCloud · GPTQModelversion=7.0; version=7.1; version=7.2.0

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Memory Corruption
CWE-125Out-of-Bounds Read
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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