Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessReach OAM authentication endpoint over HTTP
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DeliverySend crafted request to Authentication Engine
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ExploitBypass credential validation
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ExecutionGain unauthorized access as trusted principal
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ImpactRead or modify all OAM-accessible data
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK
2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Exploitation requires network HTTP reachability to an Oracle Access Manager instance running affected version 12.2.1.4.0 or 14.1.2.1.0 with the Authentication Engine component exposed - the same path used for normal SSO logins. Per the CVSS vector (AV:N/AC:L/PR:N/UI:N), there are no special conditions beyond reachability: remote unauthenticated exploitation is possible with no credentials and no user interaction against the affected configurations. The primary limiting factors are version (only 12.2.1.4.0 and 14.1.2.1.0 are named) and network exposure - deployments where the OAM authentication endpoints are not reachable from the attacker's network segment (e.g., internal-only, behind a filtering proxy) materially reduce realistic exploitability. |
| Impact | This is a genuine high-priority issue, not a high-CVSS-but-low-real-risk case. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) describes network-reachable, low-complexity exploitation requiring no privileges and no user interaction - Oracle itself characterizes it as 'easily exploitable,' which aligns with the vector. Confidentiality and integrity are both High; availability is Not affected, so this is a data-exposure and data-tampering threat rather than a denial-of-service one. No EPSS score, KEV listing, POC, or SSVC decision data was supplied, so exploitation-probability and automatability signals cannot be quantified from the input - the risk case rests on the CVSS vector, the authentication-bypass nature, and OAM's exposed perimeter role. The absence of a KEV/POC signal should not be read as low risk: identity-broker authentication bypasses are historically attractive targets, and the low complexity means weaponization could follow disclosure quickly. Treat as critical until patched. |
| Exploit ScenarioDerived | An attacker with only network access to the OAM authentication endpoint sends crafted HTTP requests to the Authentication Engine and bypasses credential validation, obtaining unauthorized access to OAM-protected data and the ability to create, delete, or modify it. No credentials, no user interaction, and no elevated privileges are needed, and the low attack complexity means the technique is repeatable once known; no public exploit is identified at time of analysis. |
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Alert meAnalysisAIv1 – Jul 21, 2026
Authentication bypass in Oracle Access Manager (Oracle Fusion Middleware, Authentication Engine) versions 12.2.1.4.0 and 14.1.2.1.0 allows a remote, unauthenticated attacker to read and modify all data accessible to the product via crafted HTTP requests. Rated CVSS 3.1 9.1 with high confidentiality and integrity impact, the flaw was disclosed by Oracle in the July 2026 Critical Patch Update; there is no public exploit identified at time of analysis, and the low attack complexity plus no-privilege/no-interaction requirements make it a top-priority patch for any Oracle IAM deployment.
RemediationAI
Apply the fixes from the Oracle Critical Patch Update of July 2026 (https://www.oracle.com/security-alerts/cpujul2026.html) - patch available per vendor advisory; consult that document for the exact patch/bundle corresponding to Oracle Access Manager 12.2.1.4.0 and 14.1.2.1.0, as no standalone fix version string was provided in the input. Until patches are deployed, reduce exposure by restricting network reachability of the OAM authentication endpoints to trusted networks or via a reverse proxy/WAF that filters malformed authentication requests (trade-off: may break legitimate federated or external SSO flows), and increase monitoring of OAM authentication logs for anomalous session creation or access grants that lack a corresponding valid login (trade-off: detective, not preventive). Because OAM fronts many applications, coordinate the patch window carefully as it affects the SSO path for all protected services.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Oracle Access Manager (OAM) is the enterprise single sign-on and access-management component of Oracle Fusion Middleware, brokering authentication and authorization for downstream web applications and portals. The defect resides in OAM's Authentication Engine, the subsystem that validates credentials and issues session/access tokens; the vendor tag 'Authentication Bypass' indicates the engine can be induced to grant access or trust without proper credential validation. NVD lists no CWE (N/A), but the behavior is consistent with the improper-authentication / authentication-bypass class (CWE-287/CWE-288), where a logic or validation flaw lets an actor assume a trusted state without satisfying the intended authentication checks. Because OAM sits at the perimeter as the identity gatekeeper, a bypass here undermines the trust boundary for every application it protects. The affected CPE is cpe:2.3:a:oracle_corporation:oracle_access_manager, with confirmed affected releases 12.2.1.4.0 and 14.1.2.1.0.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Unauthenticated network HTTP exploitation of the authentication engine with no user interaction gives AV:N/AC:L/PR:N/UI:N; bypass exposes and alters all accessible data (C:H/I:H) with no availability impact (A:N).
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
DescriptionCVE.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).
Executive ViewAI
Oracle Access Manager (Fusion Middleware) versions 12.2.1.4.0 and 14.1.2.1.0 contain a critical authentication bypass that allows unauthenticated remote attackers to read and modify all protected data. Since Oracle Access Manager typically controls identity and access for the entire enterprise, this vulnerability directly compromises the trust boundary protecting all downstream systems and user data. With no vendor patch currently available, immediate risk mitigation is mandatory.
Implement strict network segmentation restricting Oracle Access Manager access to trusted administrator networks only; deploy WAF rules to monitor and block anomalous HTTP requests targeting the OAM instance; enable comprehensive audit logging to detect unauthorized data access and modification attempts; restrict local and remote access to essential administrative staff with multi-factor authentication; configure network-based IP whitelisting at the perimeter to limit inbound connections; implement real-time alerting on unusual authentication patterns or data access volumes; consider disabling non-critical OAM functions if operationally feasible.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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EUVD-2026-46741
GHSA-7v8w-hh6v-r9r7
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB