CVE-2020-2686

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.18 and prior. Easily exploitable vulnerability allows low 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 3.0 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/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-20200122-0002/Third Party Advisory
• https://usn.ubuntu.com/4250-1/Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2020.htmlPatch, Vendor Advisory
• https://security.gentoo.org/glsa/202105-27Third Party Advisory
• https://security.netapp.com/advisory/ntap-20200122-0002/Third Party Advisory
• https://usn.ubuntu.com/4250-1/Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2020.htmlPatch, Vendor Advisory

Published

Jan 15, 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.
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