Security readout for executives and security teams
Plain-English summary
CVE-2021-2204 is an Oracle WebLogic Server flaw that can let an unauthenticated remote attacker read some accessible WebLogic data over HTTP. It is not described as full server takeover, but exposed WebLogic systems may leak sensitive operational or application information.
Executive priority
Treat this as a moderate confidentiality risk. Prioritize internet-facing or partner-facing WebLogic systems first, because exploitation requires only network access over HTTP and no credentials, but the documented impact is limited to partial data exposure.
Technical view
Oracle lists affected WebLogic Server versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, meaning network-reachable HTTP attack surface with confidentiality-only impact.
Likely exposure
Exposure is most likely where Oracle WebLogic Server HTTP interfaces are reachable by untrusted networks and run one of the affected versions. The provided sources do not identify affected cloud services, downstream products, or specific vulnerable endpoints.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Oracle describes the issue as easily exploitable by unauthenticated attackers with network access via HTTP.
Researcher notes
No CWE, exploit details, or endpoint-level indicators are provided in the source bundle. Validation should focus on version exposure, patch state, and network reachability rather than proof-of-concept testing.
Mitigation direction
- Review Oracle's April 2021 Critical Patch Update for WebLogic guidance.
- Apply the relevant Oracle WebLogic Server security updates for affected versions.
- Inventory WebLogic instances and confirm whether listed versions remain deployed.
- Limit untrusted HTTP access to WebLogic interfaces where business permits.
Validation and detection
- Identify all deployed Oracle WebLogic Server versions.
- Confirm affected versions have the relevant April 2021 CPU fixes applied.
- Map which WebLogic HTTP interfaces are reachable from untrusted networks.
- Review access logs for unusual unauthenticated HTTP activity.
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-2021-2204 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
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpuapr2021.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.