Security readout for executives and security teams
Plain-English summary
CVE-2021-2226 is a confidentiality issue in Oracle MySQL Server’s Information Schema component. An attacker already holding high database privileges and network access could expose critical MySQL data. It is not described as remotely exploitable by unauthenticated users, but exposed or over-privileged database environments should treat it as a meaningful data-risk issue.
Executive priority
Prioritize remediation during normal database patching unless MySQL is externally reachable or privileged credentials may be exposed. In those cases, accelerate because successful exploitation could disclose all data accessible to the MySQL Server.
Technical view
Oracle reports affected MySQL Server versions as 5.7.33 and prior, and 8.0.23 and prior. CVSS 3.1 is 4.9: network-accessible, low complexity, high privileges required, no user interaction, unchanged scope, high confidentiality impact, no integrity or availability impact.
Likely exposure
Exposure is most relevant where affected MySQL versions are reachable over the network and high-privileged database accounts exist. Internet-reachable MySQL, shared administrator accounts, or weak privilege management increase business risk.
Exploitation context
The bundle does not show CISA KEV listing or other cited evidence of active exploitation. Exploitation requires a high-privileged attacker with network access via MySQL-supported protocols, limiting broad opportunistic risk but raising insider, credential-theft, and lateral-movement concerns.
Researcher notes
No CWE, proof-of-concept, exploit indicators, or vulnerability mechanics are included in the supplied sources. Assessment should focus on version exposure, network reachability, privilege inventory, and vendor remediation status rather than exploit reproduction.
Mitigation direction
- Apply Oracle’s April 2021 CPU guidance or later vendor-supported MySQL remediation.
- Upgrade MySQL versions reported as 5.7.33 and prior or 8.0.23 and prior.
- Restrict MySQL network access to trusted application and administrative sources.
- Review and reduce high-privileged MySQL accounts where operationally possible.
- Check NetApp guidance if NetApp-managed products are in scope.
Validation and detection
- Inventory MySQL Server versions across production, staging, and backups.
- Confirm no running MySQL instance remains at affected versions.
- Review firewall, security group, and bind-address exposure for MySQL services.
- Audit high-privileged MySQL accounts and remove unnecessary access.
- Review database logs for unusual privileged access to sensitive data.
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-2021-2226 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:H/I:N/A:N
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:H/I:N/A:N1.23.6Primary 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:H/I:N/A:N
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.