CVE-2021-2030

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.21 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-2021-20294A flaw was found in binutils readelf 2.35 program. An attack…7.8
• CVE-2021-20295It was discovered that the update for the virt:rhel module i…6.5
• CVE-2021-20296A flaw was found in OpenEXR in versions before 3.0.0-beta. A…5.3
• CVE-2021-20297A flaw was found in NetworkManager in versions before 1.30.0…5.5
• CVE-2021-20298A flaw was found in OpenEXR's B44Compressor. This flaw allow…7.5
• CVE-2021-20299A flaw was found in OpenEXR's Multipart input file functiona…7.5
• CVE-2021-20300A flaw was found in OpenEXR's hufUncompress functionality in…5.5
• CVE-2021-20301Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2021-20302A flaw was found in OpenEXR's TiledInputFile functionality. …5.5
• CVE-2021-20303A flaw found in function dataWindowForTile() of IlmImf/ImfTi…6.1
• CVE-2021-20304A flaw was found in OpenEXR's hufDecode functionality. This …7.5
• CVE-2021-20305A flaw was found in Nettle in versions before 3.7.2, where s…8.1