CVE-2026-73912

Modified Modified - Updated After Analysis

Remote Code Execution in Helidon

Publication date: 2026-08-18

Last updated on: 2026-08-28

Assigner: Oracle

Description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in takeover of Helidon. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-18

Last Modified

2026-08-28

Generated

2026-09-08

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-07

NVD

CVE-2026-73912

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	4.5.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a critical vulnerability in Oracle Fusion Middleware's Helidon product, specifically in the Imperative Web Server component. It affects version 4.5.0 and allows unauthenticated attackers to remotely compromise the system via HTTP requests. Successful exploitation could lead to full system takeover.

Detection Guidance

Since this is a vulnerability in Oracle Helidon 4.5.0, detection involves checking for the affected version or vulnerable configurations. Use commands like 'curl -v http://<target>:<port>/' to inspect server responses for Helidon version details. Network scans with tools like Nmap ('nmap -sV -p <port> <target>') may identify the service. Verify installed packages with 'dpkg -l | grep helidon' (Debian) or 'rpm -qa | grep helidon' (RHEL).

Impact Analysis

If you use Helidon 4.5.0, an attacker could gain complete control over your system without needing credentials. This could lead to data theft, system damage, or disruption of services. The high CVSS score indicates severe potential impact.

Compliance Impact

This vulnerability allows unauthenticated attackers to compromise Helidon, potentially leading to unauthorized access, data breaches, or system takeover. Such impacts could violate GDPR (data protection) and HIPAA (health data privacy) by exposing sensitive information or disrupting critical services.

Mitigation Strategies

Upgrade Helidon to a version unaffected by this vulnerability. If upgrading is not immediately possible, apply recommended patches from Oracle. Restrict network access to the Imperative Web Server component via firewalls or network segmentation. Monitor Oracle security advisories for updates.

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