EUVD-2026-61421
GHSA-37ch-jw89-h889
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Unauthenticated ('Authentication Bypass'), remote HTTP, no user interaction give AV:N/AC:L/PR:N/UI:N; full data read (C:H) and complete DoS (A:H) with no data tampering (I:N).
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Siebel Apps - Marketing product of Oracle Siebel CRM (component: Marketing). Supported versions that are affected are 17.0-26.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel Apps - Marketing. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel Apps - Marketing accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Siebel Apps - Marketing. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).
AnalysisAI
Unauthenticated remote compromise of Oracle Siebel CRM's Siebel Apps - Marketing component (versions 17.0 through 26.6) allows a network attacker over HTTP to read all Marketing-accessible data and to force a complete, repeatable denial of service. The flaw is rated CVSS 3.1 9.1 and is tagged as an authentication bypass, meaning no credentials are required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The only firm prerequisite is network reachability to the Siebel Apps - Marketing HTTP interface of an affected Oracle Siebel CRM instance (versions 17.0-26.6); per CVSS AV:N/AC:L/PR:N/UI:N and the 'Authentication Bypass' tag, no credentials, no special configuration, and no user interaction are required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are strongly aligned toward high priority: the CVSS vector (AV:N/AC:L/PR:N/UI:N) describes remote, low-complexity, unauthenticated exploitation with no user interaction, and the 'Authentication Bypass' tag reinforces the PR:N rating. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply Oracle's August 2026 Critical Patch Update, which is the vendor-released fix for this issue; Patch available per vendor advisory at https://www.oracle.com/security-alerts/cspuaug2026.html (the input does not specify a discrete fixed build number, so validate the exact patch level for your Siebel release against that advisory before deploying). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an inventory of all Siebel CRM instances running versions 17.0-26.6, identify those with network accessibility, and implement immediate network access controls including firewall rules, VPN requirements, and IP whitelisting to restrict access to trusted networks and users only. …
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External POC / Exploit Code
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