Security readout for executives and security teams
Plain-English summary
CVE-2021-2212 is a denial-of-service issue in Oracle MySQL Server. An already high-privileged attacker with network access could cause MySQL Server to hang or repeatedly crash. The business risk is service disruption, not data theft or modification based on the provided sources.
Executive priority
Treat as a moderate availability risk. Prioritize remediation for business-critical MySQL servers, especially internet-adjacent or broadly reachable environments with many privileged users.
Technical view
The flaw affects MySQL Server 8.0.23 and prior in the Server: Optimizer component. CVSS 3.1 is 4.9 with network attack vector, low complexity, high privileges required, no user interaction, unchanged scope, and high availability impact only.
Likely exposure
Exposure is most likely where MySQL Server 8.0.23 or earlier is reachable over network protocols by users or services holding high database privileges.
Exploitation context
The source bundle does not show KEV listing or public active exploitation. Exploitation requires high privileges and network access, reducing likelihood but leaving meaningful outage risk for important databases.
Researcher notes
The available sources identify affected versions, component, privileges, and availability impact, but do not provide root-cause detail, exploit status, or a named fixed version in the bundle.
Mitigation direction
- Identify MySQL Server instances running 8.0.23 or earlier.
- Apply Oracle CPU or MySQL updates following vendor guidance.
- Restrict network access to MySQL from trusted systems only.
- Review and minimize high-privileged MySQL accounts.
- Check NetApp guidance if MySQL is part of a NetApp-managed environment.
Validation and detection
- Inventory MySQL Server versions across production and managed platforms.
- Confirm whether any instances are 8.0.23 or earlier.
- Verify Oracle security update status against the April 2021 CPU guidance.
- Review privileged account access paths to MySQL services.
- Monitor affected systems for unexplained hangs or repeated crashes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-2212 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H1.23.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpuapr2021.htmlCVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210513-0002/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.