CVE-2026-5858 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 includes administrators and users of Google Chrome in managed environments. The vulnerability affects Google Chrome on various platforms, and users should verify their versions and update as necessary.

Technical summary

The CVE-2026-5858 vulnerability is a heap buffer overflow in the WebML component of Google Chrome. This issue was present in versions prior to 147.0.7727.55 and could be exploited by a remote attacker to execute arbitrary code via a crafted HTML page. The vulnerability has been classified as Critical by the Chromium security team. The CVE record and NVD entry provide additional technical details about the vulnerability.

Defensive priority

High

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 need for this update
• Consider implementing additional monitoring for potential exploitation attempts
• 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 2026-04-08T22:16:25.253Z and was last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Analyzed. This information is based on the NVD entry and the official CVE record. The vulnerability affects Google Chrome versions prior to 147.0.7727.55. Users should verify their versions and update as necessary. The CVE record and NVD entry provide additional context and details about the vulnerability.

Official resources