CVE-2026-12449

Local privilege escalation via Chromoting use-after-free

Published Jun 17, 2026 · Updated Jun 17, 2026

Use after free in Chromoting in Google Chrome before 149.0.7827.155 allows local users to escalate OS privileges via a malicious file. The public record identifies the locus only as Chromoting; the restricted issue does not disclose which object is freed or how a stale reference is reused. Exploitation is limited to Windows, requires local access and user interaction with the file, and grants OS-level privileges.

CVSS severity7.8
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use after free in Chromoting in Google Chrome before 149.0.7827.155 allows local users to escalate OS privileges via a malicious file. The public record identifies the locus only as Chromoting; the restricted issue does not disclose which object is freed or how a stale reference is reused. Exploitation is limited to Windows, requires local access and user interaction with the file, and grants OS-level privileges.

The record

CVE
CVE-2026-12449
Published
Jun 17, 2026
Updated
Jun 17, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-416, T1204.002, T1068, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=149.0.7827.155 <149.0.7827.155

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=149.0.7827.155 <149.0.7827.155

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1204.002User Execution: Malicious File
T1068Exploitation for Privilege Escalation
T1203Exploitation for Client Execution

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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