CVE-2021-2170

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.23 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKV7TRUEQW6EV45RSZVVFLVQMNHVHBCJ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJQRPXNDH6YHQLUSCS5VA7DAW32PN7N7/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJVUTKKFQAWR7NURCQHQQ5JHTVYGEOYQ/
• https://security.netapp.com/advisory/ntap-20210513-0002/Third Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2021.htmlVendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKV7TRUEQW6EV45RSZVVFLVQMNHVHBCJ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJQRPXNDH6YHQLUSCS5VA7DAW32PN7N7/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJVUTKKFQAWR7NURCQHQQ5JHTVYGEOYQ/
• https://security.netapp.com/advisory/ntap-20210513-0002/Third Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2021.htmlVendor Advisory

Published

Apr 22, 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-2021-21694FilePath#toURI, FilePath#hasSymlink, FilePath#absolutize, Fi…9.8
• CVE-2021-21695FilePath#listFiles lists files outside directories that agen…8.8
• CVE-2021-21696Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not …9.8
• CVE-2021-21697Jenkins 2.318 and earlier, LTS 2.303.2 and earlier allows an…9.1
• CVE-2021-21698Jenkins Subversion Plugin 2.15.0 and earlier does not restri…7.5
• CVE-2021-21699Jenkins Active Choices Plugin 2.5.6 and earlier does not esc…5.4
• CVE-2021-21700Jenkins Scriptler Plugin 3.3 and earlier does not escape the…5.4
• CVE-2021-21701Jenkins Performance Plugin 3.20 and earlier does not configu…6.5
• CVE-2021-21702In PHP versions 7.3.x below 7.3.27, 7.4.x below 7.4.15 and 8…7.5
• CVE-2021-21703In PHP versions 7.3.x up to and including 7.3.31, 7.4.x belo…7
• CVE-2021-21704In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8…5.9
• CVE-2021-21705In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8…5.3