CVE-2026-5877 Google CVE debrief

Who should care

Users of Google Chrome prior to version 147.0.7727.55 should update to the latest version to mitigate this vulnerability. This vulnerability has a CVSS score of 8.8 and is classified as HIGH severity. Security teams and IT administrators responsible for managing Google Chrome deployments should prioritize updating to version 147.0.7727.55 or later. Additionally, operators and platform administrators should be aware of the potential impact and take necessary precautions to protect against exploitation.

Technical summary

The vulnerability is a use after free in the Navigation component of Google Chrome. This occurs when the browser's memory management system incorrectly frees memory that is still being used, allowing an attacker to execute arbitrary code inside a sandbox. The vulnerability has been assigned a CVSS score of 8.8 and is classified as HIGH severity. The affected component, Navigation, handles webpage navigation and management. Exploitation of this vulnerability requires a crafted HTML page, which can be used to trigger the use after free condition.

Defensive priority

High priority should be given to updating Google Chrome to version 147.0.7727.55 or later to mitigate this vulnerability. Security teams should also review compensating controls and monitor for suspicious activity related to this vulnerability.

Recommended defensive actions

• Update Google Chrome to version 147.0.7727.55 or later
• Ensure that all users of Google Chrome are aware of the vulnerability and the need to update
• Monitor for any suspicious activity related to this vulnerability
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-04-08T22:16:27.323Z and was last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Analyzed. This information is based on the provided source corpus and may not reflect the full scope of affected systems or potential impacts. Users should verify the details with the official CVE record and NVD entry for the most accurate and up-to-date information.

Sources and 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.