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PatchSiren cyber security CVE debrief

CVE-2026-12462 Google CVE debrief

CVE-2026-12462 is a high-severity use after free vulnerability in Google Chrome's Media component. This PatchSiren debrief provides an AI-assisted analysis of a use after free vulnerability in Google Chrome prior to version 149.0.7827.155. The vulnerability allowed a remote attacker who had compromised the renderer process to execute arbitrary code inside a sandbox via a crafted HTML page. The affected product is Google Chrome prior to version 149.0.7827.155. Likely operational impact includes arbitrary code execution. Source-confidence limits suggest that defenders should verify Chrome version and update as necessary.

Vendor
Google
Product
Chrome
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-18
Advisory published
2026-06-17
Advisory updated
2026-06-18

Who should care

This vulnerability affects users of Google Chrome prior to version 149.0.7827.155. Administrators and users of Chrome should ensure they are running the latest version to mitigate this vulnerability. Operators, platform administrators, and security teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

The vulnerability is a use after free issue in the Media component of Google Chrome. This occurs when the program attempts to use memory after it has been freed, which can lead to arbitrary code execution. The vulnerability has been rated as High severity by the Chromium security team. A remote attacker who had compromised the renderer process could execute arbitrary code inside a sandbox via a crafted HTML page. The affected product is Google Chrome prior to version 149.0.7827.155.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.155 or later
  • Ensure that Chrome is configured to automatically update
  • Monitor Chrome version and update as necessary
  • Consider implementing additional security measures such as sandboxing and monitoring for suspicious activity
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-06-17T13:20:03.333Z and was last modified on 2026-06-18T04:16:41.553Z. The NVD entry is currently Analyzed. The vulnerability has been rated as High severity by the Chromium security team. Evidence limits suggest that defenders verify Chrome version and update as necessary. Additional verification tasks include reviewing the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-12462 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-12462

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

  • CVE-2026-12462 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-12462

    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.