Security readout for executives and security teams
Plain-English summary
This is a high-severity Oracle Database issue in the Java VM component. A low-privileged database user with Create Session access over Oracle Net could, under difficult conditions requiring another person’s interaction, take over Java VM and affect confidentiality, integrity, and availability.
Executive priority
Treat this as high priority for Oracle Database environments because successful exploitation could compromise Java VM with high confidentiality, integrity, and availability impact. Urgency increases for databases reachable over Oracle Net by many low-privileged users.
Technical view
CVE-2020-2735 affects Oracle Database 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, and 19c. CVSS 3.0 is 8.0 with network attack vector, high complexity, low privileges, required user interaction, changed scope, and high CIA impact.
Likely exposure
Exposure is most likely where affected Oracle Database versions run the Java VM component, accept Oracle Net connectivity, and have users with Create Session privilege. The source bundle does not define affected configurations beyond supported versions and component.
Exploitation context
The source states exploitation is difficult and requires low privileges, Oracle Net network access, and human interaction from someone other than the attacker. The bundle does not show CISA KEV listing or active exploitation evidence.
Researcher notes
Key constraints are AV:N, AC:H, PR:L, UI:R, S:C. Avoid assuming exploitability without confirming Java VM presence, Oracle Net reachability, and privilege assignments. The sources do not provide exploit details, CWE mapping, or active exploitation confirmation.
Mitigation direction
- Apply the applicable Oracle April 2020 CPU guidance for affected Oracle Database versions.
- Prioritize supported Oracle Database instances running 11.2.0.4 through 19c.
- Restrict Oracle Net access to trusted networks while remediation is planned.
- Review accounts with Create Session privilege for unnecessary access.
- Check Oracle guidance before relying on compensating controls.
Validation and detection
- Inventory Oracle Database versions across production and exposed environments.
- Confirm whether affected instances include the Java VM component.
- Identify users or roles with Create Session privilege.
- Verify April 2020 CPU or later applicable Oracle fixes are installed.
- Document any unpatched instances and compensating access restrictions.
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.
Database behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-2735 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
- High
- CVSS
- 8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/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:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H1.36Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8HighVector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpuapr2020.htmlCVE reference · x_refsource_MISC
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.