PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-18018 Google CVE debrief

A local attacker can perform UI spoofing in Google Chrome on Windows prior to version 151.0.7922.72 via a malicious file due to inappropriate implementation in the Updater. This issue has a medium CVSS score of 4 and is classified as a Low severity by Chromium. The CVE was published on 2026-07-30T01:17:06.610Z and last modified on 2026-10-23T22:10:00.160Z.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-30
Original CVE updated
2026-10-23
Advisory published
2026-07-30
Advisory updated
2026-10-23

Who should care

Defenders responsible for managing and securing Google Chrome installations on Windows should be aware of this vulnerability and take steps to verify and update their installations to version 151.0.7922.72 or later. Additionally, users who download and execute files from untrusted sources may be at risk of being targeted by this vulnerability.

Why it matters

This vulnerability allows a local attacker to perform UI spoofing in Google Chrome on Windows prior to version 151.0.7922.72 via a malicious file. Defenders should prioritize verifying and updating Google Chrome installations and ensuring users are aware of the risks associated with downloading and executing files from untrusted sources.

  • Verify and update Google Chrome on Windows to version 151.0.7922.72 or later to prevent UI spoofing
  • Ensure users are aware of the risks associated with downloading and executing files from untrusted sources
  • Monitor for and respond to potential UI spoofing attempts

Technical summary

The vulnerability is caused by inappropriate implementation in the Updater component of Google Chrome on Windows. This allows a local attacker to perform UI spoofing via a malicious file. The issue has a CVSS score of 4 and is classified as Low severity by Chromium.

Defensive priority

Defenders should prioritize verifying and updating Google Chrome on Windows to version 151.0.7922.72 or later, and ensure that users are aware of the risks associated with downloading and executing files from untrusted sources.

Recommended defensive actions

  • Verify and update Google Chrome on Windows to version 151.0.7922.72 or later
  • Ensure users are aware of the risks associated with downloading and executing files from untrusted sources
  • Monitor for and respond to potential UI spoofing attempts

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, its CVSS score, and affected versions of Google Chrome. Release notes and issue tracker entries from Google provide additional context on the fix and its implementation.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-18018 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-18018

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-18018 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-18018

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.