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CVE Record

CVE-2021-2461: Vulnerability in the Oracle Communications Interactive Session Recorder product of Oracle Communications (c...

Vulnerability in the Oracle Communications Interactive Session Recorder product of Oracle Communications (component: Provision API). The supported version that is affected is 6.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Communications Interactive Session Recorder. While the vulnerability is in Oracle Communications Interactive Session Recorder, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Communications Interactive Session Recorder accessible data as well as unauthorized read access to a subset of Oracle Communications Interactive Session Recorder accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Communications Interactive Session Recorder. CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L).

HighCVSS 8.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-2461 is a high-severity Oracle Communications Interactive Session Recorder issue in version 6.4. An unauthenticated attacker reachable over HTTP could alter some recorder data, read some data, and cause partial service disruption. Business urgency depends on whether ISR 6.4 or its Provision API is network-accessible.

Executive priority

Treat as a priority if Oracle ISR 6.4 supports communications recording, compliance, or operational workflows. The issue can affect confidentiality, integrity, and availability without attacker credentials, so internet or broad internal exposure should drive faster action.

Technical view

The vulnerability affects Oracle Communications Interactive Session Recorder 6.4, component Provision API. CVSS 3.1 is 8.3 with AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L. The CVE states attacks may also significantly impact additional products, but the supplied sources do not identify which products.

Likely exposure

Exposure is most likely where Oracle Communications Interactive Session Recorder 6.4 is deployed and its HTTP Provision API is reachable from untrusted networks. The source bundle does not identify other affected versions or products beyond possible downstream impact.

Exploitation context

The CVE describes the issue as easily exploitable by an unauthenticated network attacker over HTTP. The source bundle does not cite public exploitation, exploit code, or CISA KEV listing, so active exploitation is not established here.

Researcher notes

The supplied evidence is limited to the CVE description, CVSS vector, affected version 6.4, and Oracle CPU reference. No CWE, root cause, fixed version, proof of exploitation, or named downstream product impact is provided in the bundle.

Mitigation direction

  • Identify any Oracle Communications Interactive Session Recorder 6.4 deployments.
  • Review Oracle October 2021 CPU guidance for vendor-approved remediation.
  • Restrict HTTP access to the Provision API to trusted networks only.
  • Monitor ISR data changes and service health for suspicious activity.
  • Check vendor guidance before assuming non-6.4 versions are affected or fixed.

Validation and detection

  • Inventory ISR instances and confirm product version numbers.
  • Verify whether the Provision API is reachable over HTTP from untrusted networks.
  • Check patch or advisory status against Oracle CPU October 2021.
  • Review logs for unauthenticated API access, unexpected data changes, or partial outage patterns.
  • Assess connected products for business impact if ISR data integrity is compromised.
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-2021-2461 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
8.3 (3.1)
Known Exploited
No
Published

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

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
8.3CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L3.93.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.3High
CVSS 3.1 vector shape for CVE-2021-2461Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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 CorporationCommunications Interactive Session Recorder6.4Listed
Weakness

CWE details

No CWE listed

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