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CVE Record

CVE-2021-2450: 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-2021-2450 is a denial-of-service flaw in Oracle Outside In Technology 8.5.5. If an affected application feeds network-supplied HTTP data into Outside In, an unauthenticated attacker could make the component hang or repeatedly crash, disrupting services that depend on document or content processing.

Executive priority

Prioritize remediation for internet-facing or business-critical systems that parse uploaded or network-delivered content. The expected impact is outage risk, not data theft, but repeated crashes can still disrupt customer-facing workflows.

Technical view

Oracle describes an easily exploitable vulnerability in Outside In Filters, part of Outside In Technology 8.5.5. The CVSS 7.5 score assumes network attack over HTTP, no privileges, no user interaction, unchanged scope, and high availability impact only. Oracle notes the score depends on how embedding software passes data to the SDK.

Likely exposure

Exposure is most likely where Oracle Outside In Technology 8.5.5 is embedded in applications that process untrusted files or content received over HTTP or another network path.

Exploitation context

The bundle does not show CISA KEV listing or active exploitation evidence. Oracle’s description supports unauthenticated network exploitability for denial of service, but not confidentiality or integrity compromise.

Researcher notes

Important scoping detail: Outside In is an SDK, so real exposure depends on the embedding application and input path. The provided sources do not name a fixed version, workaround, exploit, or affected downstream products.

Mitigation direction

  • Identify applications or products embedding Oracle Outside In Technology 8.5.5.
  • Review Oracle’s July 2021 Critical Patch Update guidance for this CVE.
  • Apply vendor-directed patches or upgrades where affected deployments are confirmed.
  • Reduce direct exposure of Outside In processing to untrusted network input.
  • Add operational monitoring for repeated parser crashes or hangs.

Validation and detection

  • Inventory Oracle Outside In SDK versions in deployed products and custom applications.
  • Confirm whether network-received content is passed directly to Outside In.
  • Check vendor advisories for products bundling Outside In Technology.
  • Review application logs for repeatable crashes during content processing.
  • Verify remediation status against Oracle’s July 2021 CPU guidance.
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-2021-2450 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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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-2021-2450Attack 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.