PatchSiren cyber security CVE debrief
CVE-2026-76021 Google CVE debrief
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-20T21:17:10.280Z and has not been modified since then. This use-after-free vulnerability in Google Chrome's DOM, prior to version 151.0.7922.173, allows remote attackers to execute arbitrary code inside the sandbox via a crafted HTML page. Organizations and individuals using Google Chrome for browsing should be aware of this high-severity vulnerability and take immediate action to update their browsers. IT teams and security professionals should prioritize this issue due to its high severity rating and potential impact on browser security. The vulnerability is related to improper handling of DOM elements, which can lead to code execution. Limited evidence suggests that this issue may impact organizations using Google Chrome for browsing. Further verification is recommended to confirm affected scope and severity. The Chromium security team has assigned a high severity rating to this issue.
- Vendor
- Product
- Chrome
- CVSS
- HIGH 8.8
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-20
- Original CVE updated
- 2026-08-22
- Advisory published
- 2026-08-20
- Advisory updated
- 2026-08-22
Who should care
Organizations and individuals using Google Chrome for browsing, particularly those in high-risk environments, should be aware of this vulnerability and take immediate action to update their browsers to prevent potential exploitation. IT teams and security professionals responsible for managing browser updates and vulnerability management should prioritize this issue due to its high severity rating and potential impact on browser security.
Technical summary
A use-after-free vulnerability in the DOM of Google Chrome prior to version 151.0.7922.173 allows remote attackers to execute arbitrary code inside the sandbox via a crafted HTML page. This issue has been assigned a high severity rating by the Chromium security team. The vulnerability is related to improper handling of DOM elements, which can lead to code execution. Affected users should update their browsers to prevent potential exploitation.
Defensive priority
High severity vulnerability in Google Chrome, requiring immediate attention to prevent potential code execution.
Recommended defensive actions
- Apply the official patch to update Google Chrome to version 151.0.7922.173 or later.
- Ensure all users are running the updated version of Google Chrome.
- 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
Evidence from official sources, including NVD and CVE.org, indicates a high severity vulnerability in Google Chrome prior to version 151.0.7922.173. The vulnerability is related to a use-after-free issue in the DOM, which could allow remote attackers to execute arbitrary code inside the sandbox via a crafted HTML page. Limited evidence suggests that this issue may impact organizations using Google Chrome for browsing. Further verification is recommended to confirm affected scope and severity.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-20T21:17:10.280Z and has not been modified since then.