CVE-2026-96812Hinoki check available

Host root code execution via CUSE device passthrough

Published Sep 25, 2026 · Updated Sep 25, 2026

Improper resource exposure in Google gVisor before 573a9e73cf844f allows local users to execute code as root on Linux hosts. The gofer passes a /dev/cuse character device from a container image to the host, where unrestricted CUSE ioctl handling lets the sandbox register a host device and overwrite root udev helper memory. Exploitation requires CUSE to be enabled and privileges to deploy a crafted container image; success crosses the sandbox boundary with host-root execution.

CVSS severityUnavailable
Unscored
EPSS probability0.10%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper resource exposure in Google gVisor before 573a9e73cf844f allows local users to execute code as root on Linux hosts. The gofer passes a /dev/cuse character device from a container image to the host, where unrestricted CUSE ioctl handling lets the sandbox register a host device and overwrite root udev helper memory. Exploitation requires CUSE to be enabled and privileges to deploy a crafted container image; success crosses the sandbox boundary with host-root execution.

The record

CVE
CVE-2026-96812
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
WebM Project
Product
gVisor
Classifications
CWE-668, T1611
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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?

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  1. Affected versionversion=0 <573a9e73cf844f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

WebM Project · gVisorversion=0 <573a9e73cf844f

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
T1611Escape to Host

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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