Security readout for executives and security teams
Plain-English summary
CVE-2021-35572 is a denial-of-service issue in Oracle Outside In Technology 8.5.5. If an application exposes Outside In parsing to HTTP-supplied content, an unauthenticated attacker could make the component hang or repeatedly crash, disrupting services that depend on document or content conversion.
Executive priority
Treat this as a high-priority availability risk for exposed document-processing services, especially customer-facing portals or workflows. It is not described as data theft or code execution, but repeated crashes can still interrupt business operations and customer access.
Technical view
Oracle describes an easily exploitable vulnerability in Outside In Filters within Outside In Technology 8.5.5. The CVSS 3.1 score is 7.5, network attack vector, low complexity, no privileges or user interaction, with high availability impact and no stated confidentiality or integrity impact.
Likely exposure
Exposure is most likely where products or internal applications embed Outside In Technology 8.5.5 and pass HTTP-received data directly into the SDK. Risk may be lower when inputs are local, authenticated, pre-filtered, or not network reachable.
Exploitation context
The provided sources do not show CISA KEV listing or other evidence of active exploitation. The issue is described as easily exploitable and unauthenticated over HTTP in applicable deployments, but the impact is limited to availability in the cited CVSS vector.
Researcher notes
Key uncertainty is deployment context. Oracle notes the protocol and CVSS score depend on software using the SDK. Validation should focus on whether network-originated data is passed directly into Outside In Technology and whether affected version 8.5.5 remains present.
Mitigation direction
- Inventory applications embedding Oracle Outside In Technology 8.5.5.
- Review Oracle CPU October 2021 and current Oracle guidance for applicable updates.
- Prioritize systems processing untrusted HTTP-submitted documents or content.
- Reduce direct network exposure to parsing workflows where feasible.
- Monitor dependent services for hangs, repeated crashes, and restart loops.
Validation and detection
- Confirm whether Outside In Technology 8.5.5 is present in deployed software.
- Map every path where HTTP input reaches Outside In Filters.
- Check vendor patch or component version against Oracle guidance.
- Verify service monitoring detects parser hangs and repeated crashes.
- Document compensating controls for systems that cannot be updated immediately.
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-2021-35572 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.