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CVE Record

CVE-2021-2430: Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside I...

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Filters). The supported version that is affected is 8.5.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. Note: Outside In Technology is a suite of software development kits (SDKs). The protocol and CVSS Base Score depend on the software that uses Outside In Technology. The CVSS score assumes that the software passes data received over a network directly to Outside In Technology, but if data is not received over a network the CVSS score may be lower. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-2430 is a denial-of-service flaw in Oracle Outside In Technology 8.5.5. If an application feeds network-supplied content into this SDK, an unauthenticated attacker could make the service hang or repeatedly crash, disrupting availability. The sources do not indicate data theft, data alteration, or confirmed active exploitation.

Executive priority

Treat as a high availability risk where Outside In 8.5.5 handles network-submitted content. Prioritize internet-facing or business-critical services first. This is not described as a data breach vulnerability in the provided sources, but outage potential is significant.

Technical view

Oracle describes an easily exploitable vulnerability in Outside In Filters, reachable by an unauthenticated attacker over HTTP when the embedding software passes network data directly to Outside In Technology. CVSS 3.1 is 7.5, with high availability impact and no confidentiality or integrity impact. Oracle notes the effective protocol and score depend on the consuming application.

Likely exposure

Exposure is most likely in products or internal services that embed Oracle Outside In Technology SDK 8.5.5 for document or content filtering and process HTTP-originated input. Systems using the SDK only on trusted local data may have lower practical exposure, per Oracle’s note.

Exploitation context

The bundle provides no KEV listing and no cited evidence of active exploitation. The vulnerability is described as low-complexity and unauthenticated when reachable through HTTP, so internet-facing upload, preview, indexing, or filtering paths deserve priority review.

Researcher notes

Key uncertainty is the embedding application’s data path. Oracle states Outside In is an SDK suite, and CVSS assumes network data is passed directly to it. Validate reachability and version before escalating. No CWE, exploit confirmation, or fixed version detail is present in the supplied bundle.

Mitigation direction

  • Identify all applications embedding Oracle Outside In Technology 8.5.5.
  • Review Oracle’s July 2021 Critical Patch Update guidance for this CVE.
  • Apply the relevant Oracle vendor update where applicable.
  • Restrict untrusted network input reaching Outside In until patched.
  • Monitor affected services for repeated hangs or crashes.

Validation and detection

  • Inventory SDK versions in deployed applications and vendor products.
  • Trace whether HTTP-supplied files or content reach Outside In Filters.
  • Confirm patch status against Oracle CPU July 2021 records.
  • Review logs and uptime data for repeatable crash patterns.
  • Document whether exposure is internet-facing, internal, or offline-only.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2021-2430 mapping review

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Vulnerability profileCVE Program record
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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2021-2430Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationOutside In Technology8.5.5Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.