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CVE-2026-5886 Google CVE debrief

CVE-2026-5886 is an out-of-bounds read vulnerability in WebAudio in Google Chrome on Mac prior to 147.0.7727.55. This vulnerability allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. The Chromium security severity is rated as Medium. The vulnerability affects users of Google Chrome on Mac operating systems, specifically versions prior to 147.0.7727.55. Users who have not updated to the latest version of Google Chrome are at risk. To address this vulnerability, it is essential to update Google Chrome on Mac to version 147.0.7727.55 or later. This update patches the out-of-bounds read vulnerability in WebAudio, preventing potential attackers from obtaining sensitive information from process memory.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-24
Advisory published
2026-04-08
Advisory updated
2026-07-24

Who should care

This vulnerability affects users of Google Chrome on Mac operating systems. Specifically, versions prior to 147.0.7727.55 are vulnerable. Users who have not updated to the latest version of Google Chrome are at risk.

Technical summary

The vulnerability is an out-of-bounds read issue in the WebAudio component of Google Chrome on Mac. This issue occurs when the browser attempts to read data beyond the boundaries of a buffer, potentially leading to the disclosure of sensitive information from the process memory. The vulnerability can be exploited by a remote attacker through a crafted HTML page. The issue highlights the importance of keeping software up-to-date to prevent potential security breaches. The CVSS score of 5.3 and Medium severity rating emphasize the need for prompt action.

Defensive priority

Medium priority should be given to updating Google Chrome on Mac to version 147.0.7727.55 or later. This update patches the out-of-bounds read vulnerability in WebAudio, preventing potential attackers from obtaining sensitive information from process memory.

Recommended defensive actions

  • Update Google Chrome on Mac to version 147.0.7727.55 or later.
  • Ensure that all users of Google Chrome on Mac are aware of the need for this update.
  • Consider implementing a monitoring system to track and enforce updates to Google Chrome.
  • 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 for CVE-2026-5886 was published on 2026-04-08T22:16:28.367Z and last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Analyzed. The vulnerability has a CVSS score of 5.3 and is rated as Medium severity.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-08T22:16:28.367Z and has not been modified since then. The NVD entry is currently Analyzed.