CVE-2020-9951

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to arbitrary code execution.

• CWE-416

• http://seclists.org/fulldisclosure/2020/Nov/18Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Nov/19Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Nov/20Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Nov/22Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/23/3Mailing List, Third Party Advisory
• https://security.gentoo.org/glsa/202012-10Third Party Advisory
• https://support.apple.com/HT211845Release Notes, Vendor Advisory
• https://support.apple.com/kb/HT211843Vendor Advisory
• https://support.apple.com/kb/HT211844Vendor Advisory
• https://support.apple.com/kb/HT211850Vendor Advisory
• https://support.apple.com/kb/HT211935Vendor Advisory
• https://support.apple.com/kb/HT211952Vendor Advisory
• https://www.debian.org/security/2020/dsa-4797Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Nov/18Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Nov/19Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Nov/20Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Nov/22Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/23/3Mailing List, Third Party Advisory
• https://security.gentoo.org/glsa/202012-10Third Party Advisory
• https://support.apple.com/HT211845Release Notes, Vendor Advisory
• https://support.apple.com/kb/HT211843Vendor Advisory
• https://support.apple.com/kb/HT211844Vendor Advisory
• https://support.apple.com/kb/HT211850Vendor Advisory
• https://support.apple.com/kb/HT211935Vendor Advisory
• https://support.apple.com/kb/HT211952Vendor Advisory
• https://www.debian.org/security/2020/dsa-4797Third Party Advisory

Published

Oct 16, 2020

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.
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• CVE-2020-9945A spoofing issue existed in the handling of URLs. This issue…4.3
• CVE-2020-9946This issue was addressed with improved checks. This issue is…6.8
• CVE-2020-9947A use after free issue was addressed with improved memory ma…8.8
• CVE-2020-9948A type confusion issue was addressed with improved memory ha…8.8
• CVE-2020-9949A use after free issue was addressed with improved memory ma…7.8
• CVE-2020-9950A use after free issue was addressed with improved memory ma…8.8
• CVE-2020-9952An input validation issue was addressed with improved input …7.1
• CVE-2020-9954A buffer overflow issue was addressed with improved memory h…7.8
• CVE-2020-9955An out-of-bounds write issue was addressed with improved bou…7.8
• CVE-2020-9956An out-of-bounds read was addressed with improved input vali…7.8
• CVE-2020-9958An out-of-bounds write issue was addressed with improved bou…7.8
• CVE-2020-9959A lock screen issue allowed access to messages on a locked d…2.4