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CVE Record

CVE-2021-2344: Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core).

Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 3.7.1.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle Coherence. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Coherence. 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-2021-2344 is a denial-of-service flaw in Oracle Coherence. An unauthenticated network attacker who can reach affected services over T3 or IIOP can make Coherence hang or crash repeatedly, disrupting applications that depend on it. The sources describe availability impact only, not data theft or code execution.

Executive priority

Treat this as a high-priority availability risk for environments using affected Oracle Coherence versions. It is not described as data compromise, but repeated crashes can disrupt dependent business systems. Patch or isolate reachable deployments promptly.

Technical view

Oracle Coherence Core versions 3.7.1.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0 are affected. CVSS 3.1 is 7.5: network, low complexity, no privileges, no user interaction, unchanged scope, high availability impact, no confidentiality or integrity impact.

Likely exposure

Exposure is most likely where Oracle Coherence is deployed in Oracle Fusion Middleware environments and reachable over T3 or IIOP. Internet exposure is not stated in the sources; organizations should check internal and external network paths to affected Coherence services.

Exploitation context

The provided sources say the vulnerability is easily exploitable by an unauthenticated attacker with network access via T3 or IIOP. The bundle does not show CISA KEV listing or other evidence of active exploitation, so active exploitation should not be assumed.

Researcher notes

The record provides a clear CVSS vector and affected version list but no CWE, root-cause details, exploit artifacts, or confirmed exploitation. Validation should focus on version exposure, protocol reachability, and patch state rather than exploit reproduction.

Mitigation direction

  • Apply Oracle’s July 2021 Critical Patch Update or later vendor guidance for affected Coherence versions.
  • Restrict T3 and IIOP access to trusted networks and required systems only.
  • Prioritize systems where Coherence supports business-critical applications or customer-facing services.
  • Monitor Coherence availability, crashes, and repeated service restarts.
  • Confirm unsupported or legacy Coherence deployments have an upgrade or isolation plan.

Validation and detection

  • Inventory Oracle Coherence deployments and record exact versions.
  • Check whether any affected versions listed by Oracle remain in use.
  • Review network exposure for T3 and IIOP access paths.
  • Confirm applicable Oracle CPU fixes are installed in each environment.
  • Review monitoring for unexplained Coherence hangs, crashes, or repeated restarts.
Prepared
Confidence
high
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-2021-2344 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-2021-2344Attack 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 CorporationCoherence3.7.1.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0Listed
Weakness

CWE details

No CWE listed

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