Security readout for executives and security teams
Plain-English summary
This is a denial-of-service flaw in Oracle Essbase Administration Services. An unauthenticated attacker who can reach the EAS Console over HTTP could crash or hang the service. The business impact is service availability, not disclosed data theft or data modification.
Executive priority
Prioritize remediation for internet-facing or broadly reachable Essbase administration systems. The issue can disrupt administrative availability without credentials, but the cited impact is denial of service only.
Technical view
CVE-2021-35654 affects Oracle Essbase Administration Services EAS Console versions prior to 11.1.2.4.046 and prior to 21.3. CVSS 3.1 is 7.5: network exploitable, low complexity, no privileges, no user interaction, high availability impact only.
Likely exposure
Exposure is most likely where Oracle Hyperion Essbase Administration Services EAS Console is deployed on affected versions and reachable over HTTP from untrusted networks or broad internal segments.
Exploitation context
The source states this is easily exploitable by an unauthenticated attacker with network access via HTTP. The provided bundle shows no CISA KEV listing and provides no evidence of active exploitation.
Researcher notes
The record does not name a CWE or provide root-cause detail. Analysis should stay focused on HTTP-reachable EAS Console availability exposure and version validation against Oracle CPU guidance.
Mitigation direction
- Upgrade affected Essbase Administration Services versions to Oracle-supported fixed versions or later.
- Review Oracle Critical Patch Update guidance for the exact patch path.
- Restrict HTTP access to the EAS Console to trusted administrative networks.
- Monitor Essbase Administration Services for repeated crashes, hangs, or abnormal restarts.
Validation and detection
- Inventory Essbase Administration Services deployments and identify EAS Console exposure.
- Confirm versions are not prior to 11.1.2.4.046 or prior to 21.3.
- Check whether EAS Console HTTP endpoints are reachable from untrusted networks.
- Review service logs for repeated availability failures around EAS Console access.
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-2021-35654 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpuoct2021.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.