External risk intelligence

Oracle REST Data Services Vulnerability Allows System Takeover.

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2026-46775

A vulnerability in Oracle REST Data Services allows a low-privileged attacker with network access to take over the service. This could significantly impact other connected products and pose a risk to data confidentiality, integrity, and availability. Organizations should identify affected assets and apply vendor fixes.

4Halo Surface Signal

Oracle Rest Data Services

24.2.0 to 26.1.0

External exposure likelihood

Halo Surface Signal score for CVE-2026-46775

Oracle REST Data Services is commonly deployed to provide web and API access to Oracle databases, often serving as an internet-facing or edge-accessible interface for applications.

PCI scan relevance

PCI Relevance for CVE-2026-46775

Yes

CVE-2026-46775 — Halo PCI Relevance: Yes. Under typical PCI ASV external scan criteria, this issue may be flagged for scan prioritization.

This critical vulnerability in Oracle REST Data Services allows attackers to take over the service, which would likely cause an ASV scan failure.

Scan-prioritization guidance only—not a PCI DSS certification or ASV attestation.

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability has been identified within Oracle REST Data Services. This flaw could allow a low-privileged attacker with network access to compromise the service. Successful exploitation may lead to a takeover of Oracle REST Data Services, potentially impacting connected systems and data.

  • Vulnerable Oracle REST Data Services component
  • Easily exploitable flaw
  • Compromise of services and data

Attack Path

How an attacker could exploit the issue

An attacker can exploit a vulnerability in Oracle REST Data Services to gain unauthorized control. This vulnerability allows a low-privileged attacker with network access to compromise the service. Successful exploitation can lead to the takeover of Oracle REST Data Services, potentially impacting other connected products.

  • Exposed via network access.
  • Attacker gains access.
  • Attacker triggers vulnerability for control.

Live Threat

Current exploitation, exposure, and threat context

The vulnerability in Oracle REST Data Services presents a significant risk due to its ease of exploitation and the potential for widespread impact. Attackers with limited privileges can exploit this through network access, leading to a complete takeover of the affected services. This situation demands immediate attention to mitigate potential business disruptions and data compromises.

  • Low-privileged attacker skill level
  • Network access required
  • High business risk, treat as urgent

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in Oracle REST Data Services presents a significant risk due to its potential for unauthorized takeover of the service. An attacker with network access and low privileges can exploit this vulnerability, leading to impacts on confidentiality, integrity, and availability. The scope of the attack can extend beyond Oracle REST Data Services to additional products, underscoring the severity of the exposure. Organizations should prioritize actions to identify and mitigate this risk.

  • Find affected Oracle REST Data Services assets.
  • Reduce exposure or isolate affected systems.
  • Apply vendor fix, verify, and monitor.

Frequently asked questions

What is Oracle REST Data Services and what is it used for?

Oracle REST Data Services (ORDS) is a component used with Oracle databases. It allows developers to build web applications and APIs that interact with the data stored in Oracle databases using RESTful principles. This means it acts as a bridge between web applications and the database.

What kind of weakness does CVE-2026-46775 represent?

CVE-2026-46775 is a weakness classified as CWE-400 and CWE-284, indicating issues related to Uncontrolled Resource Consumption and Improper Access Control. In simpler terms, it means the software doesn't properly manage resources or control who can access certain functions, allowing an attacker to exploit this lack of control.

How can an attacker exploit this Oracle REST Data Services vulnerability?

An attacker can exploit this vulnerability by having network access to the affected Oracle REST Data Services. They do not need special privileges beyond what a low-privileged user might have. The vulnerability is triggered through network access, and it's important to note that certain actions or configurations might not trigger the bug, but the general path involves network interaction.

Who should be concerned about this Oracle REST Data Services vulnerability?

Organizations running Oracle REST Data Services should be concerned. Halo Surface Signal indicates this is likely a concern because ORDS is often deployed to provide web and API access to Oracle databases, frequently serving as an internet-facing interface for applications. This means it could be accessible from outside your internal network.

What are the first steps to address CVE-2026-46775 in Oracle REST Data Services?

The first steps involve identifying all systems running the affected versions of Oracle REST Data Services. Once identified, consider reducing the exposure of these systems or isolating them if possible. Applying the official fix from Oracle when available is crucial, followed by verification and ongoing monitoring.

References