EUVD-2026-61808
GHSA-63vw-5vmr-92xg
Severity by source
AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Network vector via HTTPS confirmed; AC:H reflects high-complexity exploitation prerequisites; PR:L mandatory per description; UI:R required for victim interaction; S:C and full C/I with no availability impact match description precisely.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.6. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTPS to compromise Siebel CRM End User. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Siebel CRM End User, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM End User accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM End User accessible data. CVSS 3.1 Base Score 7.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N).
AnalysisAI
Oracle Siebel CRM End User versions 17.0 through 26.6 expose a network-exploitable flaw in the Open UI component that, when triggered via a crafted HTTPS interaction, grants a low-privileged attacker full read and write access to critical CRM data - including complete confidentiality and integrity compromise with a documented scope change to additional products. The 'Authentication Bypass' tag reported by Oracle's security team suggests the Open UI layer can be manipulated to circumvent access controls in the context of an authenticated victim's session. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold a pre-existing authenticated low-privileged account within the Siebel CRM environment (confirmed by PR:L in the CVSS vector) and to successfully induce a separate authenticated user to actively interact with attacker-controlled content over HTTPS (confirmed by UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 7.7 accurately captures severe confidentiality and integrity impact with a scope change, but real-world exploitability is meaningfully constrained by three compounding CVSS metrics. … 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 | Organizations should apply Oracle's August 2026 Critical Security Patch Update (CPU), available at https://www.oracle.com/security-alerts/cspuaug2026.html, as the primary remediation for all Siebel CRM End User deployments in the 17.0-26.6 range; an exact patched version number was not independently specified in the available data beyond the CPU reference. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify and inventory all Oracle Siebel CRM instances in production and non-production environments, documenting software versions to pinpoint affected systems (17.0-26.6). …
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today