CVE-2026-62613: Oracle Reports Developer Auth Bypass Flaw

CVE-2026-62613 Overview

CVE-2026-62613 is a critical vulnerability in the Oracle Reports Developer product of Oracle Fusion Middleware, specifically in the Security and Authentication component. The affected version is 12.2.1.19.0. An unauthenticated attacker with access to the physical communication segment attached to the hardware running Oracle Reports Developer can compromise the product. The flaw carries a CVSS 3.1 base score of 9.3 with a scope change, meaning successful exploitation can significantly impact additional products beyond Oracle Reports Developer itself. Attackers gain unauthorized creation, deletion, or modification access to critical data and full read access to all data accessible by Oracle Reports Developer.

Critical Impact
Adjacent-network attackers without credentials can compromise Oracle Reports Developer, resulting in complete confidentiality and integrity loss across data accessible to the product, with scope change extending impact to additional components.

Affected Products

Oracle Fusion Middleware — Oracle Reports Developer
Affected version: 12.2.1.19.0
Component: Security and Authentication

Discovery Timeline

2026-08-18 - CVE-2026-62613 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62613

Vulnerability Analysis

The vulnerability resides in the Security and Authentication component of Oracle Reports Developer 12.2.1.19.0. Oracle classifies it as easily exploitable and requires no authentication or user interaction. An attacker positioned on the same physical communication segment as the host running Oracle Reports Developer can send crafted traffic to compromise the service. Because the CVSS vector reports a scope change, exploitation can affect resources managed outside the vulnerable component's security authority. Confidentiality and integrity are fully impacted, while availability is not affected. This pattern is consistent with a broken access control or authentication weakness in a network-facing service reachable at the link-layer or adjacent-subnet level.

Root Cause

Oracle has not disclosed technical internals for the flaw. Based on the CVSS vector and the affected component name, the root cause lies in the Security and Authentication logic exposed by Oracle Reports Developer to adjacent network peers. The service accepts and acts on requests without adequately validating the identity or authorization of the caller. Refer to the Oracle Security Alert for vendor-provided details.

Attack Vector

Exploitation requires adjacent network access (AV:A), meaning the attacker must reside on the same broadcast domain, VLAN, or physical segment as the target host. No credentials (PR:N) and no user interaction (UI:N) are required, and attack complexity is low (AC:L). Once positioned, the attacker issues requests to the vulnerable Oracle Reports Developer service to read, create, modify, or delete data accessible by the product. The scope change indicates that compromised trust in Oracle Reports Developer propagates to additional Oracle Fusion Middleware components.

No verified proof-of-concept code has been published. See the vendor advisory for authoritative technical details.

Detection Methods for CVE-2026-62613

Indicators of Compromise

Unexpected authentication or session-establishment traffic to Oracle Reports Developer listeners originating from unmanaged hosts on the local segment.
Anomalous read, create, update, or delete operations against Oracle Reports Developer repositories outside normal reporting workflows.
New or modified report definitions, data sources, or credentials introduced without a corresponding change ticket.

Detection Strategies

Baseline the client population that legitimately communicates with Oracle Reports Developer and alert on connections from any host outside that allow list.
Monitor Oracle Fusion Middleware audit logs for authentication events lacking a valid principal or originating from adjacent hosts not in the expected inventory.
Correlate scope-change indicators by watching downstream Fusion Middleware components for privileged actions initiated by the Reports Developer service account.

Monitoring Recommendations

Forward Oracle Reports Developer, WebLogic, and OHS logs into a centralized analytics platform for cross-source correlation.
Deploy network sensors on VLANs hosting Fusion Middleware to capture Layer 2 and Layer 3 anomalies associated with adjacent-network attacks.
Alert on privilege changes, new report artifacts, and outbound connections initiated by the Reports Developer process.

How to Mitigate CVE-2026-62613

Immediate Actions Required

Apply the fixes published in the Oracle Security Alert for August 2026 as the highest priority for any deployment running Oracle Reports Developer 12.2.1.19.0.
Inventory all Oracle Fusion Middleware hosts and confirm which run Oracle Reports Developer at the affected version.
Restrict Layer 2 and Layer 3 reachability to Reports Developer hosts to a minimal set of administrative and application peers.
Review Fusion Middleware audit logs for suspicious activity dating back to before the patch date.

Patch Information

Oracle addressed CVE-2026-62613 in its Security Alert published alongside the affected version. Administrators must download the vendor-supplied patch bundle for Oracle Reports Developer 12.2.1.19.0 from My Oracle Support and apply it following Oracle's documented patch procedure for Fusion Middleware. Consult the Oracle Security Alert for the exact patch identifiers and prerequisites.

Workarounds

Isolate Oracle Reports Developer servers on a dedicated management VLAN with strict access control lists limiting adjacent-network exposure.
Enforce port-level 802.1X or MAC filtering on switch ports serving Fusion Middleware hosts to prevent rogue devices from joining the segment.
Disable or firewall Oracle Reports Developer listeners on hosts where the service is not required for production reporting.

bash

# Configuration example: restrict access to Oracle Reports Developer listener
# Replace 10.10.20.0/24 with your authorized management subnet
# and 7777 with the actual Reports Developer listener port.
iptables -A INPUT -p tcp --dport 7777 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 7777 -j DROP