CVE-2021-2070

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.22 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

• https://security.gentoo.org/glsa/202105-27Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210219-0003/Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2021.htmlVendor Advisory
• https://security.gentoo.org/glsa/202105-27Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210219-0003/Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2021.htmlVendor Advisory

Published

Jan 20, 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-2021-20694Improper access control vulnerability in DAP-1880AC firmware…8.8
• CVE-2021-20695Improper following of a certificate's chain of trust vulnera…8.8
• CVE-2021-20696DAP-1880AC firmware version 1.21 and earlier allows a remote…8.8
• CVE-2021-20697Missing authentication for critical function in DAP-1880AC f…9.8
• CVE-2021-20698Sharp NEC Displays (UN462A R1.300 and prior to it, UN462VA R…9.8
• CVE-2021-20699Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA …9.8
• CVE-2021-20700Buffer overflow vulnerability in the Disk Agent CLUSTERPRO X…9.8
• CVE-2021-20701Buffer overflow vulnerability in the Disk Agent CLUSTERPRO X…9.8
• CVE-2021-20702Buffer overflow vulnerability in the Transaction Server CLUS…9.8
• CVE-2021-20703Buffer overflow vulnerability in the Transaction Server CLUS…9.8
• CVE-2021-20704Buffer overflow vulnerability in the compatible API with pre…9.8
• CVE-2021-20705Improper input validation vulnerability in the WebManager CL…7.5