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PatchSiren cyber security CVE debrief

CVE-2026-9992 Google CVE debrief

A use-after-free vulnerability in Google Chrome's Network component, rated High severity by Chromium, allows remote code execution inside the browser sandbox when a user visits a crafted HTML page. The flaw was addressed in Chrome 148.0.7778.216 for desktop platforms.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-28
Original CVE updated
2026-07-21
Advisory published
2026-05-28
Advisory updated
2026-07-21

Who should care

Organizations with Chrome deployments on desktop platforms; security teams managing browser update cadence; endpoint protection teams monitoring for browser-based exploitation.

Technical summary

CVE-2026-9992 is a use-after-free (CWE-416) in Chrome's Network subsystem. A remote attacker can exploit the flaw by inducing a user to load a malicious HTML page, resulting in arbitrary code execution within the browser sandbox. The vulnerability is network-exploitable with user interaction required and no privileges needed. Google patched it in Chrome 148.0.7778.216; earlier versions on Windows, macOS, and Linux are affected. No known exploitation in ransomware campaigns (not listed in CISA KEV).

Defensive priority

high

Recommended defensive actions

  • Update Google Chrome to version 148.0.7778.216 or later on all supported desktop platforms (Windows, macOS, Linux).
  • Verify automatic update mechanisms are enabled and functioning for managed Chrome deployments.
  • If immediate patching is not feasible, restrict users from visiting untrusted websites and disable JavaScript where operationally acceptable, noting this may not fully eliminate risk given the Network component attack表面.
  • Monitor for anomalous browser crashes or unexpected sandbox escape indicators on endpoints running unpatched Chrome versions.
  • Review Chromium security advisories for additional stable-channel fixes released concurrently.

Evidence notes

CVE published 2026-05-28; NVD entry modified 2026-05-29. Vendor advisory confirms fix in Chrome 148.0.7778.216. Chromium bug tracker entry 513177826 is restricted (Permissions Required). CPE data indicates affected product is Google Chrome versions prior to 148.0.7778.216 on Windows, macOS, and Linux. CVSS 3.1 vector: AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. CWE-416 (Use After Free) identified.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-9992 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-9992

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

  • CVE-2026-9992 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-9992

    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.