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PatchSiren cyber security CVE debrief

CVE-2026-79259 Google CVE debrief

The CVE-2026-79259 vulnerability is caused by improper input validation in Safebrowsing in Google Chrome prior to version 152.0.7977.65. This allows a remote attacker to bypass system access restrictions via a crafted file. The vulnerability has a CVSS score of 4.3 and is rated as Medium severity by Chromium. Users and administrators of Google Chrome should be aware of this vulnerability and take immediate action to update to the latest version. The CVE record was published on 2026-08-25T21:18:20.450Z and has not been modified since then. Affected product deployments should be reviewed for potential exposure, and owners should be assigned for follow-up.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-25
Original CVE updated
2026-08-31
Advisory published
2026-08-25
Advisory updated
2026-08-31

Who should care

Users and administrators of Google Chrome, especially those in environments where security is a high priority, should be aware of this vulnerability and take immediate action to update to the latest version. Affected operators, platforms, and security teams should review the vulnerability and implement necessary mitigations.

Technical summary

The CVE-2026-79259 vulnerability is caused by improper input validation in Safebrowsing in Google Chrome prior to version 152.0.7977.65. This allows a remote attacker to bypass system access restrictions via a crafted file. The vulnerability has a CVSS score of 4.3 and is rated as Medium severity by Chromium. The issue affects Google Chrome deployments and requires immediate attention to prevent potential bypass of system access restrictions.

Defensive priority

Medium severity vulnerability in Google Chrome, requiring immediate attention to prevent potential bypass of system access restrictions.

Recommended defensive actions

  • Apply the official patch to update Google Chrome to version 152.0.7977.65 or later.
  • Restrict access to sensitive features and resources.
  • Monitor system logs for suspicious activity.
  • Implement additional security measures, such as two-factor authentication.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.

Evidence notes

The CVE-2026-79259 vulnerability was reported in Google Chrome prior to version 152.0.7977.65. The issue is related to improper input validation in Safebrowsing, which could allow a remote attacker to bypass system access restrictions via a crafted file. The Chromium security severity is rated as Medium.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-79259 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-79259

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

  • CVE-2026-79259 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-79259

    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.