Security readout for executives and security teams
Plain-English summary
This is a low-severity integrity issue in Oracle Database Enterprise Edition Data Redaction. An attacker with database login ability could alter some Data Redaction-accessible data, but the attack requires another person’s interaction and does not affect confidentiality or availability in the CVE record.
Executive priority
Treat this as routine patching unless the affected databases hold high-value data or have broad internal network exposure. The business risk is data integrity, not data theft or outage, based on the CVE record.
Technical view
CVE-2021-2336 affects Oracle Database Enterprise Edition 12.1.0.2, 12.2.0.1, and 19c Data Redaction. The vector is network-accessible via Oracle Net, low complexity, low privileges with Create Session, and required user interaction. Impact is limited to unauthorized update, insert, or delete access to some reachable data.
Likely exposure
Exposure is most likely where affected Oracle Enterprise Edition versions are reachable over Oracle Net and low-privileged accounts have Create Session. Environments not using Data Redaction still need vendor confirmation because the vulnerable component is present in the product scope.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not marked KEV. Exploitation requires authenticated low privilege access and human interaction by someone other than the attacker, limiting practical urgency compared with unauthenticated database flaws.
Researcher notes
Evidence is limited to CVE and Oracle advisory metadata. Do not assume broader Oracle Database impact beyond Enterprise Edition Data Redaction or active exploitation. The CVSS vector indicates authenticated network reachability, low complexity, user interaction, and low integrity impact only.
Mitigation direction
- Review Oracle July 2021 Critical Patch Update guidance for this CVE.
- Apply the applicable Oracle vendor patch or later supported CPU.
- Restrict Oracle Net access to trusted networks and applications.
- Review low-privileged accounts with Create Session permission.
- Prioritize affected systems hosting sensitive or regulated data.
Validation and detection
- Inventory Oracle Database Enterprise Edition 12.1.0.2, 12.2.0.1, and 19c instances.
- Confirm whether Data Redaction is installed, enabled, or used.
- Verify patch level against Oracle July 2021 CPU guidance.
- Review accounts with Create Session and unnecessary database access.
- Check audit logs for unexpected updates, inserts, or deletes to relevant 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.
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-2021-2336 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
- Low
- CVSS
- 3.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/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:L/UI:R/S:U/C:N/I:L/A:N2.11.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.5LowVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpujul2021.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.