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PatchSiren cyber security CVE debrief

CVE-2026-11659 Google CVE debrief

CVE-2026-11659 is a critical vulnerability in Google Chrome on Linux, with a CVSS score of 9.6. The vulnerability is caused by an integer overflow in the UI, which allows a remote attacker to potentially perform a sandbox escape via a crafted HTML page. The vulnerability was published on June 9, 2026, and has been assigned a high severity rating by Chromium.

Vendor
Google
Product
Chrome
CVSS
CRITICAL 9.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-09
Advisory published
2026-06-09
Advisory updated
2026-06-09

Who should care

Users of Google Chrome on Linux, particularly those who browse the internet and may be exposed to crafted HTML pages.

Technical summary

The vulnerability is caused by an integer overflow in the UI of Google Chrome on Linux. This allows a remote attacker to potentially perform a sandbox escape via a crafted HTML page. The vulnerability has been assigned a CVSS score of 9.6 and a high severity rating by Chromium.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.103 or later.
  • Refer to [ref-4](https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html) for more information on the stable channel update for desktop.

Evidence notes

The vulnerability was published on June 9, 2026, and has been assigned a high severity rating by Chromium. The vulnerability affects Google Chrome on Linux prior to version 149.0.7827.103.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11659 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11659

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

  • CVE-2026-11659 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11659

    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.