Live Exposure Defense: From CVE to Confirmed Exposure in 12 Hours – See more

Back
New CVE Detected

CVE-2026-83192 – Unauthenticated Takeover via Open UI – Oracle Siebel CRM End User 17.0–26.7

Be the first to know when new zero-days emerge:

Subscribe to Email Alerts
Subscribe to RSS Feed

Summary

CVE-2026-83192 is a high-severity vulnerability in the Open UI component of Oracle Siebel CRM End User. It allows an unauthenticated, remote attacker with network access via HTTP to compromise the affected system, with successful exploitation resulting in a complete takeover of Siebel CRM End User. The flaw carries a CVSS 3.1 base score of 8.1 (High) and was disclosed by Oracle on September 15, 2026.

Technical details

  • Root cause: A flaw in the Open UI component of the Siebel CRM End User product.
  • Trigger conditions: No authentication or user interaction is required to exploit the vulnerability; Oracle classifies it as difficult to exploit, indicating exploitation likely requires specific conditions or additional effort by the attacker.
  • Attack vector: Network-based, delivered over HTTP.
  • Impact: Successful exploitation results in takeover of Siebel CRM End User, with high impact to confidentiality, integrity, and availability.

Affected software

  • Oracle Siebel CRM End User, supported versions 17.0 through 26.7 (inclusive).

Severity

  • CVSS v3.1 Base Score: 8.1 (High)
  • Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Apply the Oracle Critical Patch Update that addresses CVE-2026-83192 for Siebel CRM End User, as detailed in Oracle’s September 2026 Critical Patch Update advisory. Upgrade to a patched release beyond version 26.7 or apply the corresponding vendor-supplied patch for your deployed version.
  • If immediate patching is not possible: Restrict and monitor network access to Siebel CRM End User interfaces from untrusted networks, and closely monitor internet-facing Siebel Open UI endpoints for anomalous activity until the patch can be applied.

References

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report

How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report
Close

Subscribe to Threat Center RSS

Copy/paste the link below into your preferred RSS reader or follow these instructions to subscribe to Slack alerts.

Open RSS feedSlack setup instructions

Close

Get Real-Time CVE Alerts to Your Email

Be the first to know when new zero-days emerge