CVE-2026-85892Hinoki check available

Local privilege escalation via unsynchronized shared resource

Published Sep 14, 2026 · Updated Sep 14, 2026

A race condition in Microsoft Edge (Chromium-based) before 152.0.4191.66 allows local users to elevate privileges on the host. Microsoft identifies improper synchronization of a shared resource but has not published the affected component, resource, or conflicting operation. Exploitation requires authorized local access and winning the race; Microsoft does not specify the resulting privilege level.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

A race condition in Microsoft Edge (Chromium-based) before 152.0.4191.66 allows local users to elevate privileges on the host. Microsoft identifies improper synchronization of a shared resource but has not published the affected component, resource, or conflicting operation. Exploitation requires authorized local access and winning the race; Microsoft does not specify the resulting privilege level.

The record

CVE
CVE-2026-85892
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-362, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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=1.0.0.0 <152.0.4191.66

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0.0 <152.0.4191.66

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.

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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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