Security readout for executives and security teams
Plain-English summary
CVE-2022-21527 affects Oracle MySQL Server 8.0.29 and earlier. A highly privileged network attacker could crash or hang the database and make unauthorized changes to some accessible data. The business risk is service disruption plus limited data integrity impact, not data theft according to the provided CVSS vector.
Executive priority
Treat as a scheduled but timely database maintenance item. Prioritize externally reachable or business-critical MySQL systems, especially where privileged access is broad. Emergency response is not indicated by the supplied sources because active exploitation is not evidenced.
Technical view
The flaw is in MySQL Server's Optimizer component. Oracle rates it CVSS 5.5 with network attack vector, low complexity, high privileges required, no user interaction, low integrity impact, and high availability impact. Supported affected versions are MySQL Server 8.0.29 and prior.
Likely exposure
Exposure is mainly organizations running MySQL Server 8.0.29 or earlier where highly privileged database users have network access over MySQL-supported protocols. Internet exposure increases operational risk, but exploitation still requires high privileges according to the CVE data.
Exploitation context
The provided bundle does not show CISA KEV listing or public active exploitation evidence. The issue is described as easily exploitable once the attacker already has high privileges and network access, with outcomes focused on repeatable denial of service and limited unauthorized data modification.
Researcher notes
Key constraints are PR:H and C:N, which limit initial compromise concern but leave meaningful integrity and availability risk. The source bundle does not provide exploit details, CWE mapping, or exact fixed version, so validation should rely on vendor patch/advisory status rather than inferred fixes.
Mitigation direction
- Inventory MySQL Server deployments and identify instances running 8.0.29 or earlier.
- Apply Oracle July 2022 CPU guidance or later vendor-supported MySQL updates.
- Use Fedora, NetApp, or platform vendor advisories where MySQL is bundled or redistributed.
- Restrict network access to MySQL and reduce unnecessary high-privileged accounts.
- Monitor for unexplained MySQL crashes, hangs, or unexpected data modification.
Validation and detection
- Confirm each MySQL Server version and compare against 8.0.29 and prior.
- Verify vendor patch status using Oracle CPU or applicable distribution advisories.
- Review database accounts with high privileges and network access paths.
- Check service logs for recurring crashes or optimizer-related failures.
- Validate backups and recovery procedures for affected MySQL services.
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-2022-21527 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/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:L/A:H1.24.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpujul2022.htmlCVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220729-0004/CVE reference · x_refsource_CONFIRM
- FEDORA-2022-9178229cd7CVE reference · vendor-advisory, x_refsource_FEDORA
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.