Security readout for executives and security teams
Plain-English summary
CVE-2021-35574 is a denial-of-service flaw in Oracle Outside In Technology 8.5.5. If software exposes this SDK to untrusted HTTP-delivered content, an unauthenticated attacker could make the affected component hang or repeatedly crash, disrupting dependent services.
Executive priority
Treat as high priority where document or content-processing services are exposed to untrusted network input. The business risk is outage, not data theft, but repeated crashes in critical workflows can still create material operational disruption.
Technical view
The vulnerable component is Oracle Outside In Filters in Oracle Outside In Technology 8.5.5. Oracle describes it as easily exploitable over HTTP with no privileges or user interaction when network data is passed directly to the SDK. CVSS 3.1 is 7.5, with high availability impact and no confidentiality or integrity impact stated.
Likely exposure
Exposure depends on software embedding Outside In Technology. Highest risk is services that accept untrusted files or content over HTTP and process them with Outside In 8.5.5. If input is not network-originated or is strongly controlled, the practical score may be lower.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The vendor description says exploitation is easy when the affected SDK is reachable through host software that passes network data directly to it.
Researcher notes
The CVSS vector assumes network data is passed directly to Outside In Technology. Validate the embedding application path before assigning exposure. The source bundle names only Oracle Outside In Technology 8.5.5 and does not identify other affected products or exploit activity.
Mitigation direction
- Identify applications embedding Oracle Outside In Technology 8.5.5.
- Apply Oracle Critical Patch Update guidance for CVE-2021-35574.
- Prioritize internet-facing or business-critical content processing services.
- Restrict untrusted content paths until vendor remediation is confirmed.
- Monitor affected services for hangs, crashes, and repeated restarts.
Validation and detection
- Inventory SDK versions in applications and third-party components.
- Confirm whether HTTP-received data reaches Outside In Filters.
- Check Oracle CPU advisories for applicable patched builds.
- Review service logs for crash loops or availability anomalies.
- Document compensating controls for systems not immediately patched.
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-2021-35574 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
- https://www.oracle.com/security-alerts/cpuapr2022.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.