CVE-2020-9983

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to code execution.

• CWE-787

• https://seclists.org/fulldisclosure/2020/Nov/18Mailing List, Third Party Advisory
• https://seclists.org/fulldisclosure/2020/Nov/19Mailing List, Third Party Advisory
• https://seclists.org/fulldisclosure/2020/Nov/20Mailing List, Third Party Advisory
• https://seclists.org/fulldisclosure/2020/Nov/22Mailing List, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2020/11/23/3Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY2OBQZFMEFZOSWXPXHPEHOJXXILEEX2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PDGBNKYT7NMW7CJ26YFUPUHPJVYGV7IQ/
• 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
• https://seclists.org/fulldisclosure/2020/Nov/18Mailing List, Third Party Advisory
• https://seclists.org/fulldisclosure/2020/Nov/19Mailing List, Third Party Advisory
• https://seclists.org/fulldisclosure/2020/Nov/20Mailing List, Third Party Advisory
• https://seclists.org/fulldisclosure/2020/Nov/22Mailing List, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2020/11/23/3Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY2OBQZFMEFZOSWXPXHPEHOJXXILEEX2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PDGBNKYT7NMW7CJ26YFUPUHPJVYGV7IQ/
• 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.
• 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-2020-9977A validation issue existed in the entitlement verification. …5.5
• CVE-2020-9978This issue was addressed with improved setting propagation. …4.5
• CVE-2020-9979A trust issue was addressed by removing a legacy API. This i…5.5
• CVE-2020-9980An out-of-bounds write issue was addressed with improved bou…7.8
• CVE-2020-9981A use after free issue was addressed with improved memory ma…7.8
• CVE-2020-9982This issue was addressed with improved checks to prevent una…5.5
• CVE-2020-9984An out-of-bounds read was addressed with improved input vali…7.8
• CVE-2020-9985A buffer overflow issue was addressed with improved memory h…7.8
• CVE-2020-9986A file access issue existed with certain home folder files. …3.3
• CVE-2020-9987An inconsistent user interface issue was addressed with impr…4.3
• CVE-2020-9988The issue was addressed with improved deletion. This issue i…5.5
• CVE-2020-9989The issue was addressed with improved deletion. This issue i…5.5