CVE-2021-4055

Heap buffer overflow in extensions in Google Chrome prior to 96.0.4664.93 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension.

• CWE-787

• https://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop.htmlVendor Advisory
• https://crbug.com/1266510Permissions Required
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
• https://security.gentoo.org/glsa/202208-25Third Party Advisory
• https://www.debian.org/security/2022/dsa-5046Third Party Advisory
• https://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop.htmlVendor Advisory
• https://crbug.com/1266510Permissions Required
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
• https://security.gentoo.org/glsa/202208-25Third Party Advisory
• https://www.debian.org/security/2022/dsa-5046Third Party Advisory

Published

Dec 23, 2021

Last Modified

Jun 17, 2026

Status

Modified

• 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.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-4054Incorrect security UI in autofill in Google Chrome prior to …6.5
• CVE-2021-40540ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omit…9.8
• CVE-2021-40541PHPFusion 9.03.110 is affected by cross-site scripting (XSS)…6.1
• CVE-2021-40542Opensis-Classic Version 8.0 is affected by cross-site script…6.1
• CVE-2021-40543Opensis-Classic Version 8.0 is affected by a SQL injection v…9.8
• CVE-2021-40546Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows attackers…4.9
• CVE-2021-40553piwigo 11.5.0 is affected by a remote code execution (RCE) v…8.8
• CVE-2021-40555Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2…5.4
• CVE-2021-40556A stack overflow vulnerability exists in the httpd service i…8.8
• CVE-2021-40559A null pointer deference vulnerability exists in gpac throug…5.5
• CVE-2021-4056Type confusion in loader in Google Chrome prior to 96.0.4664…8.8
• CVE-2021-40562A Segmentation fault caused by a floating point exception ex…5.5