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PatchSiren cyber security CVE debrief

CVE-2026-9119 Google CVE debrief

CVE-2026-9119 is a high-severity memory corruption issue in WebRTC as used by Google Chrome. A remote attacker could potentially trigger arbitrary code execution inside the browser sandbox by getting a user to open a crafted HTML page. The NVD record ties the issue to Chrome versions prior to 148.0.7778.179 and lists CWE-122 (heap-based buffer overflow).

Vendor
Google
Product
Chrome
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-20
Original CVE updated
2026-07-23
Advisory published
2026-05-20
Advisory updated
2026-07-23

Who should care

Organizations that use Google Chrome on managed desktops, kiosks, VDI environments, or high-risk browsing profiles should care most. Security teams should prioritize any environment where users regularly open untrusted web content or where browser exploitation could lead to follow-on access.

Technical summary

The vulnerability is described as a heap buffer overflow in Chrome's WebRTC component. The attack path is network-delivered and user-interaction dependent: a crafted HTML page is used to trigger the flaw in a prior Chrome release. The stated impact is arbitrary code execution inside the browser sandbox, and the provided CVSS vector is AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, reflecting a high-severity remote code execution risk with user interaction required.

Defensive priority

High. The combination of remote delivery, user interaction, and code execution impact makes this a priority browser update even though exploitation requires a crafted page and runs inside the sandbox.

Recommended defensive actions

  • Update Google Chrome to 148.0.7778.179 or later on all supported systems.
  • Verify that managed browser update policies are not delaying deployment of the fixed version.
  • Prioritize patching on endpoints used for general web browsing or handling untrusted content.
  • Review browser exposure on privileged workstations, shared systems, and kiosk deployments.
  • Monitor vendor advisories and Chromium issue references for any follow-on guidance or clarification.

Evidence notes

This debrief is based only on the supplied NVD record and the linked official references. The NVD entry states a heap buffer overflow in WebRTC for Google Chrome prior to 148.0.7778.179, references a Google Chrome stable-channel update and a Chromium issue, and assigns CWE-122 with a high-severity CVSS 3.1 vector. No additional exploit details were used.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-9119 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-9119

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

  • CVE-2026-9119 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-9119

    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.