CVE-2026-95702Hinoki check available

Sentry code execution via MemoryFile double-free

Published Oct 9, 2026 · Updated Oct 9, 2026

Use-after-free in Google gVisor VFS before 20260831.0 allows local users to execute code in the sentry via overlay filesystem operations. The supplied advisory describes an in-sandbox overlay filesystem double-freeing its backing MemoryFile; retrieved public sources do not independently verify that mechanism. Standard container privileges suffice according to that record, but sentry execution remains confined by host-level Linux seccomp and namespace boundaries rather than granting unrestricted host execution.

CVSS severityUnavailable
Unscored
EPSS probability0.08%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in Google gVisor VFS before 20260831.0 allows local users to execute code in the sentry via overlay filesystem operations. The supplied advisory describes an in-sandbox overlay filesystem double-freeing its backing MemoryFile; retrieved public sources do not independently verify that mechanism. Standard container privileges suffice according to that record, but sentry execution remains confined by host-level Linux seccomp and namespace boundaries rather than granting unrestricted host execution.

The record

CVE
CVE-2026-95702
Published
Oct 9, 2026
Updated
Oct 9, 2026
Vendor
WebM Project
Product
gVisor
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 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=0 <20260831.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

WebM Project · gVisorversion=0 <20260831.0

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

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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Your stack

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