Security readout for executives and security teams
Plain-English summary
CVE-2021-35592 affects Oracle MySQL Cluster. An attacker already highly privileged and positioned on the physical communication segment could, with victim interaction, take over the cluster. The prerequisites are substantial, but the business impact is serious for environments running affected cluster versions.
Executive priority
Treat this as a controlled but meaningful remediation item. It is not presented as internet-scale or actively exploited, but successful compromise could take over a MySQL Cluster, affecting sensitive data and service availability.
Technical view
Oracle describes this as a MySQL Cluster vulnerability in the Cluster: General component affecting 7.5.23 and prior, 7.6.19 and prior, and 8.0.26 and prior. CVSS 3.1 is 6.3 with adjacent attack vector, high complexity, high privileges, required user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely in organizations still operating MySQL Cluster versions at or below the affected releases. Risk is concentrated where cluster communication networks are reachable by highly privileged users or inadequately segmented from administrative or infrastructure access paths.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Oracle rates exploitation as difficult and requiring high privileges, access to the physical communication segment, and human interaction by another person.
Researcher notes
Public details identify affected versions, CVSS conditions, and takeover impact, but not the underlying weakness class or exploit mechanics. Avoid assuming broader Oracle MySQL Server exposure; the supplied record names MySQL Cluster specifically.
Mitigation direction
- Upgrade MySQL Cluster beyond 7.5.23, 7.6.19, or 8.0.26 per Oracle guidance.
- Apply the relevant Oracle October 2021 Critical Patch Update guidance.
- Restrict access to MySQL Cluster communication segments to required systems and administrators.
- Review downstream vendor advisories if MySQL Cluster is bundled or managed by another platform.
- Prioritize backup and recovery readiness before changing production clusters.
Validation and detection
- Inventory all MySQL Cluster deployments and record exact version numbers.
- Confirm whether any deployment is 7.5.23, 7.6.19, 8.0.26, or earlier.
- Review network segmentation around cluster communication paths.
- Check administrative access lists for unnecessary high-privilege users.
- Verify patch status against Oracle and relevant downstream vendor advisories.
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-2021-35592 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
- 6.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/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:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H0.45.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.3MediumVector: CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpuoct2021.htmlCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-1228/CVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20211022-0003/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.