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Vulnerability record · CVE-2026-96812 · published 25 September 2026

CVE-2026-96812: Improper privilege management vulnerability

Improper Exposure of Resource to Wrong Sphere in the host file helper (gofer) in Google gVisor prior to commit 573a9e73cf844f on Linux platforms with CUSE enabled allows a local attacker with container image deployment privileges to achieve root code execution on the host system. By including a /dev/cuse character device node in a container image, opening the device passes through to the host, allowing the sandboxed attacker to register a host device and exploit CUSE unrestricted ioctl handling to overwrite root udev helper memory.

8.8 CVSS 4.0 High EPSS 0.10% · top 99.4% CWE-269 · Improper privilege managementCWE-668 · Exposure of resource to wrong sphere Awaiting Analysis
8.8CVSS 4.0 base score
0.10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
25 Sep 2026Last modified by NVD

Description

Improper Exposure of Resource to Wrong Sphere in the host file helper (gofer) in Google gVisor prior to commit 573a9e73cf844f on Linux platforms with CUSE enabled allows a local attacker with container image deployment privileges to achieve root code execution on the host system. By including a /dev/cuse character device node in a container image, opening the device passes through to the host, allowing the sandboxed attacker to register a host device and exploit CUSE unrestricted ioctl handling to overwrite root udev helper memory.

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/google/gvisor/commit/573a9e73cf844f

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Source: NIST National Vulnerability Database (record CVE-2026-96812), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.