Security readout for executives and security teams
Plain-English summary
CVE-2021-35662 is an Oracle Outside In Technology denial-of-service issue. If a product using the SDK sends HTTP-received data directly into Outside In Filters, an unauthenticated remote attacker could make the component hang or crash repeatedly. The impact described is availability loss, not data theft or code execution.
Executive priority
Treat this as a high-priority availability risk for internet-facing or file-processing services using Outside In 8.5.5. It does not indicate data compromise, but repeatable crashes can disrupt customer-facing workflows. Prioritize confirmation of exposure and vendor-supported remediation.
Technical view
Oracle reports an easily exploitable vulnerability in Outside In Technology 8.5.5, component Outside In Filters. The CVSS 3.1 score is 7.5 with network attack vector, low complexity, no privileges, no user interaction, and high availability impact only. Oracle notes the real protocol and score depend on how the SDK is embedded.
Likely exposure
Exposure is likely where Oracle Outside In Technology 8.5.5 is embedded in an application or product that processes untrusted content received over HTTP. Organizations must check both direct SDK use and vendor products that include Outside In. Risk may be lower when input is not network-received.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation evidence. Oracle describes the issue as unauthenticated and easily exploitable over HTTP when the embedding software passes network data directly to Outside In. The documented outcome is complete denial of service through hangs or repeatable crashes.
Researcher notes
The key scoping issue is embedding context. Oracle states Outside In is an SDK suite, so the protocol and practical CVSS can vary by consuming software. Validate data flow before rating a specific deployment. No CWE is listed in the provided bundle.
Mitigation direction
- Review Oracle October 2021 CPU guidance for Outside In Technology 8.5.5.
- Identify applications and vendor products embedding Oracle Outside In Technology.
- Prioritize systems processing HTTP-sourced or otherwise untrusted files through Outside In.
- Limit exposure of services that pass untrusted network data to the SDK.
- Follow vendor remediation guidance; do not assume product-level fixes without confirmation.
Validation and detection
- Inventory direct and indirect use of Oracle Outside In Technology 8.5.5.
- Confirm whether HTTP-received data is passed directly to Outside In Filters.
- Check vendor advisories for products that bundle Oracle Outside In Technology.
- Verify remediation status against Oracle October 2021 CPU guidance.
- Monitor affected services for unexplained hangs, crashes, or repeated availability failures.
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-2021-35662 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.