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CVE-2026-62452 – Unauthenticated RCE-Level Compromise – Oracle Siebel CRM Cloud Applications 22.3–26

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Summary

CVE-2026-62452 is a critical vulnerability in the Siebel Cloud Manager component of Oracle Siebel CRM Cloud Applications. It allows an unauthenticated, remote attacker with network access via HTTP to compromise the application, resulting in unauthorized access to and modification of Siebel CRM Cloud data and partial denial of service. Oracle rates the flaw 9.9 (Critical) on CVSS v3.1, reflecting the combination of no authentication requirement, no user interaction, and a change in security scope.

Technical details

  • Root cause: A flaw in the Siebel Cloud Manager component of Siebel CRM Cloud Applications that is "easily exploitable."
  • Trigger conditions: No authentication or user interaction is required to trigger the vulnerability.
  • Attack vector: Network access via the HTTP protocol; the vulnerability can be exploited over a network without requiring logon credentials.
  • Impact: Successful exploitation can result in unauthorized access to or disclosure of critical data (high confidentiality impact), unauthorized modification of some data (low integrity impact), and a partial denial of service (low availability impact). The scope is rated "Changed," meaning the vulnerable component can impact resources beyond its own security scope.

Affected software

  • Oracle Siebel CRM Cloud Applications, versions 22.3 through 26.6 (inclusive)

Severity

  • CVSS v3.1 Base Score: 9.9 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L

Mitigation and recommended actions

  • Immediate: Apply the fix provided in Oracle’s Critical Patch Update Advisory for August 2026 (cspuaug2026), which addresses CVE-2026-62452 for all supported Siebel CRM Cloud Applications releases from 22.3 through 26.6.
  • If patching cannot be performed immediately: Restrict or monitor network/HTTP-level access to Siebel Cloud Manager endpoints where feasible, and review Oracle’s advisory for any interim guidance; there is no documented workaround in place of the vendor patch, so patching should be prioritized as soon as possible given the unauthenticated, network-exploitable nature of this flaw.

References

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