LiveActive security incident?Get immediate response
CVE Record

CVE-2021-2368: Vulnerability in the Siebel CRM product of Oracle Siebel CRM (component: Siebel Core - Server Infrastructure).

Vulnerability in the Siebel CRM product of Oracle Siebel CRM (component: Siebel Core - Server Infrastructure). Supported versions that are affected are 21.5 and Prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Siebel CRM. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM accessible data. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

MediumCVSS 5.9Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-2368 is a confidentiality flaw in Oracle Siebel CRM. An unauthenticated attacker with HTTPS network access could, under difficult conditions, gain unauthorized access to critical or all Siebel CRM-accessible data. The sources do not show CISA KEV listing or active exploitation evidence.

Executive priority

Treat this as a moderate-priority data exposure risk. It is not described as easy to exploit, but affected Siebel CRM systems may contain sensitive customer or business records, making remediation important for exposed or high-value deployments.

Technical view

Oracle describes this as affecting Siebel CRM 21.5 and prior in the Siebel Core server component. CVSS 3.1 is 5.9 with network attack vector, high attack complexity, no privileges, no user interaction, and high confidentiality impact only.

Likely exposure

Exposure is likely limited to organizations running Oracle Siebel CRM 21.5 or earlier, especially deployments reachable over HTTPS from untrusted networks. Asset owners should confirm component mapping because the supplied sources name Siebel Core server infrastructure/framework.

Exploitation context

The vulnerability is remotely reachable over HTTPS without authentication, but Oracle rates exploitation difficulty as high. The source bundle does not provide exploit details, public exploitation claims, or KEV confirmation, so active exploitation should not be assumed.

Researcher notes

The strongest evidence is Oracle’s advisory and the CVE record. No CWE is supplied. No exploit mechanics or indicators are provided. Confirm the exact Oracle advisory entry and installed patch level before declaring exposure or closure.

Mitigation direction

  • Review Oracle July 2021 CPU guidance for CVE-2021-2368.
  • Apply the relevant Oracle Siebel CRM security update or supported vendor fix.
  • Prioritize externally reachable Siebel CRM HTTPS deployments.
  • Restrict Siebel CRM HTTPS access to trusted networks where feasible.
  • Monitor Oracle guidance for version-specific remediation details.

Validation and detection

  • Inventory Oracle Siebel CRM deployments and versions.
  • Identify systems running version 21.5 or prior.
  • Confirm whether the July 2021 Oracle CPU was applied.
  • Check whether Siebel CRM is reachable from untrusted networks.
  • Review logs for unusual unauthenticated access or data access patterns.
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2021-2368 mapping review

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

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.9 (3.1)
Known Exploited
No
Published

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

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
5.9CVSS 3.1MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N2.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.9Medium
CVSS 3.1 vector shape for CVE-2021-2368Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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 CorporationSiebel Core - Server Framework21.5 and PriorListed
Weakness

CWE details

No CWE listed

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