Security readout for executives and security teams
Plain-English summary
CVE-2021-2396 is a high-severity Oracle BI Publisher flaw. A low-privileged attacker who can reach the service over HTTP could take over BI Publisher, impacting confidentiality, integrity, and availability. The source bundle does not show active exploitation.
Executive priority
Treat this as high priority for any reachable BI Publisher deployment, especially in environments tied to E-Business Suite or sensitive reporting data.
Technical view
The affected component is Oracle BI Publisher, Fusion Middleware, E-Business Suite XDO. Affected versions listed are 5.5.0.0.0, 11.1.1.9.0, 12.2.1.3.0, and 12.2.1.4.0. CVSS 3.1 is 8.8: network, low complexity, low privileges, no user interaction, high CIA impact.
Likely exposure
Exposure is most likely where affected Oracle BI Publisher versions are deployed and reachable over HTTP by authenticated low-privileged users or broader internal networks.
Exploitation context
The provided sources support easy network exploitation with low privileges and no user interaction. KEV is false, and the bundle provides no evidence of active exploitation in the wild.
Researcher notes
No CWE or root-cause detail is provided in the bundle. Analysis should stay anchored to version exposure, HTTP reachability, privilege requirements, and Oracle advisory status.
Mitigation direction
- Review Oracle July 2021 CPU guidance for CVE-2021-2396.
- Apply Oracle-supported fixes or upgrade guidance for affected BI Publisher versions.
- Limit HTTP access to BI Publisher to trusted users and networks.
- Prioritize internet-facing or broadly reachable instances first.
- Confirm unsupported or legacy versions have a remediation plan.
Validation and detection
- Inventory BI Publisher deployments and record exact versions.
- Check whether listed affected versions are present.
- Verify Oracle July 2021 CPU remediation status for each instance.
- Review access paths to BI Publisher over HTTP.
- Confirm low-privileged accounts cannot reach unnecessary BI Publisher functions.
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-2021-2396 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpujul2021.htmlCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-884/CVE 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.