EUVD-2026-79523
GHSA-q3j2-grqp-w6f4
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Unauthenticated remote HTTP bypass of the authentication engine gives full read and write to OAM data (C:H/I:H) with no availability impact (A:N); matches Oracle's vector.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
3DescriptionCVE.org
Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Access Manager. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Access Manager accessible data as well as unauthorized access to critical data or complete access to all Oracle Access Manager accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
AnalysisAI
Unauthenticated remote attackers can bypass authentication in Oracle Access Manager 12.2.1.4.0 and 14.1.2.1.0, gaining full read and write access to all data managed by the affected component. This easily exploitable vulnerability (CVSS 9.1) requires only network access to the OAM authentication engine over HTTP and no credentials or user interaction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires only network HTTP access to an Oracle Access Manager instance running affected version 12.2.1.4.0 or 14.1.2.1.0 (component: Authentication Engine); per CVSS PR:N/UI:N/AC:L it needs no authentication, no user interaction, and no special configuration - it works against default-reachable OAM authentication endpoints. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuinely high-priority vulnerability with strongly self-consistent signals. … 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 the Oracle September 2026 Critical Patch Update (CPU) for Oracle Access Manager, available via the advisory at https://www.oracle.com/security-alerts/cspusep2026.html; this is the only complete fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every Oracle Access Manager deployment and determine which are running 12.2.1.4.0 or 14.1.2.1.0, then identify which of those are reachable from the internet, partner networks, or untrusted internal segments; for any externally reachable instance, restrict access at the perimeter (deny-by-default firewall rules, IP allowlists, or placement behind an authenticated reverse proxy) and raise OAM authentication and audit logging to its most verbose setting so attempted bypasses can be detected. …
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External POC / Exploit Code
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