Description
Incorrect authorization in Updater in Google Chrome prior to 155.0.8059.79 allowed a local attacker to execute arbitrary code outside the sandbox via a local program. (Chromium security severity: High)
Published: 2026-10-13
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Local Code Execution
Action: Patch Now
AI Analysis

Impact

The vulnerability is an incorrect authorization control in the Updater component of Google Chrome. Based on the description, it is inferred that before version 155.0.8059.79, a local user could invoke the updater with elevated privileges, allowing the execution of arbitrary code outside the security sandbox. This flaw gives the user the ability to run malicious binaries or scripts with the privileges of the browser process, effectively compromising the entire system.

Affected Systems

Google Chrome versions prior to 155.0.8059.79 on all supported desktop platforms. The issue affects the updater mechanism that ships with the stable channel. Users of older stable builds are at risk.

Risk and Exploitability

The CVSS score of 9.6 indicates a critical severity, while the EPSS score of fewer than 1% suggests that, as of today, the exploitation rate remains low. The flaw is registered as a local code execution vulnerability and is not listed in the CISA KEV catalog. Based on the description, it is inferred that an attacker would need local access with the ability to run programs; via that precondition they could trigger the updater to execute arbitrary code.

Generated by OpenCVE AI on October 16, 2026 at 03:31 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Install Chrome 155.0.8059.79 or newer to rectify the incorrect authorization control in the updater component, directly addressing the issue identified as CWE-863.
  • Enable automatic updates to ensure this fix, which enforces proper authorization of updater processes, is applied promptly.
  • Apply application whitelisting or restrict local execution of the Chrome updater to mitigate the risk of an authorization bypass; ensure only the browser process can invoke updater functions (this is the control required by CWE-863).

Generated by OpenCVE AI on October 16, 2026 at 03:31 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4838-1 chromium security update
Debian DSA Debian DSA DSA-6562-1 chromium security update
History

Wed, 14 Oct 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Vendors & Products Google
Google chrome

Wed, 14 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

 ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

Wed, 14 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
Title chromium-browser: Incorrect authorization in Updater
References
Metrics threat_severity

None

 cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Important

Tue, 13 Oct 2026 21:15:00 +0000

Type Values Removed Values Added
Description Incorrect authorization in Updater in Google Chrome prior to 155.0.8059.79 allowed a local attacker to execute arbitrary code outside the sandbox via a local program. (Chromium security severity: High)
Weaknesses CWE-863
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-10-15T03:56:27.330Z

Reserved: 2026-10-13T16:49:36.864Z

Link: CVE-2026-110159

cve-icon Vulnrichment

Updated: 2026-10-14T13:15:16.975Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T22:17:35.833

Modified: 2026-10-15T04:18:20.570

Link: CVE-2026-110159

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-13T21:01:43Z

Links: CVE-2026-110159 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-24T03:30:14Z

Weaknesses