CVE-2021-37973

Use after free in Portals in Google Chrome prior to 94.0.4606.61 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

• CWE-416
• CWE-416

• https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_24.htmlRelease Notes
• https://crbug.com/1251727Issue Tracking, Patch, Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/Release Notes
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/Release Notes
• https://www.debian.org/security/2022/dsa-5046Mailing List, Third Party Advisory
• https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_24.htmlRelease Notes
• https://crbug.com/1251727Issue Tracking, Patch, Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/Release Notes
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/Release Notes
• https://www.debian.org/security/2022/dsa-5046Mailing List, Third Party Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-37973US Government Resource

Published

Oct 8, 2021

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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