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PatchSiren cyber security CVE debrief

CVE-2026-46890 Oracle Corporation CVE debrief

A critical vulnerability was discovered in Siebel Apps - Marketing, a product of Oracle Siebel CRM. The vulnerability, tracked as CVE-2026-46890, has a CVSS score of 9.8 and can be easily exploited by an unauthenticated attacker with network access via HTTP, potentially leading to a takeover of Siebel Apps - Marketing. This vulnerability affects Siebel Apps - Marketing versions 17.0-26.5 and has a high impact on confidentiality, integrity, and availability.

Vendor
Oracle Corporation
Product
Siebel Apps - Marketing
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-18
Advisory published
2026-06-17
Advisory updated
2026-06-18

Who should care

Organizations using Siebel Apps - Marketing versions 17.0-26.5 should prioritize patching this vulnerability to prevent potential takeovers. This includes reviewing current deployments, identifying potential exposure, and implementing compensating controls until patching can be completed.

Technical summary

The vulnerability is located in the Marketing component of Siebel Apps - Marketing. It has a CVSS Vector of (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating a high impact on confidentiality, integrity, and availability. The vulnerability is easily exploitable and allows an unauthenticated attacker with network access via HTTP to compromise Siebel Apps - Marketing. Successful attacks can result in takeover of Siebel Apps - Marketing.

Defensive priority

High priority should be given to patching this vulnerability due to its critical severity and potential for exploitation.

Recommended defensive actions

  • Apply the patch provided by Oracle Corporation as soon as possible
  • Conduct a thorough inventory of Siebel Apps - Marketing instances to identify potential exposure
  • Implement compensating controls, such as network segmentation or access restrictions, until patching can be completed
  • Monitor for any suspicious activity related to Siebel Apps - Marketing
  • Verify the effectiveness of the patch through testing and validation
  • Review and update incident response plans to include procedures for responding to potential exploitation of this vulnerability
  • Coordinate with Oracle Corporation for additional guidance and support

Evidence notes

The CVE record was published on 2026-06-17T10:54:06.703Z and last modified on 2026-06-18T21:58:03.200Z. The NVD entry is currently Analyzed. Oracle Corporation has provided a vendor advisory for this vulnerability. The information provided is based on the available data and should be verified with Oracle Corporation for accuracy and completeness.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46890 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46890

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-46890 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46890

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.