CVE-2026-70728: Oracle Autonomous Health Framework Bypass

CVE-2026-70728 Overview

CVE-2026-70728 is a high-severity vulnerability in the Trace File Analyzer component of Oracle Autonomous Health Framework (AHF). Affected versions include 26-26.1.0, 26.2.0, 26.3.1, 26.5.0, and 26.5.2. A low-privileged attacker with network access via HTTP can exploit the flaw with low attack complexity and no user interaction. Successful exploitation results in unauthorized access to critical data and unauthorized modification of some data. The scope changes on exploitation, meaning attacks may extend impact to additional products beyond AHF itself.

Critical Impact
Network-reachable, low-privilege attackers can obtain complete read access to AHF-accessible data and modify a subset of that data, with impact crossing into adjacent products through scope change.

Affected Products

Oracle Autonomous Health Framework 26-26.1.0
Oracle Autonomous Health Framework 26.2.0, 26.3.1
Oracle Autonomous Health Framework 26.5.0 and 26.5.2 (Trace File Analyzer component)

Discovery Timeline

2026-08-18 - CVE-2026-70728 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70728

Vulnerability Analysis

The vulnerability resides in the Trace File Analyzer (TFA) component of Oracle Autonomous Health Framework. TFA collects diagnostic data across Oracle database and Grid Infrastructure environments. The flaw is reachable over HTTP and requires only a low-privileged account on the target. Because the CVSS scope is changed, the impact of exploitation extends outside the security authority of AHF into other Oracle products that share access to AHF-collected data. Confidentiality impact is high and integrity impact is low, while availability is unaffected. The Oracle Critical Patch Update advisory for August 2026 categorizes the issue as easily exploitable.

Root Cause

Oracle has not disclosed the specific weakness class or CWE identifier. The advisory attributes the issue to the Trace File Analyzer component and indicates that a low-privileged authenticated principal can access or modify data belonging to other components through the HTTP interface. The scope change strongly suggests an authorization or trust boundary flaw between TFA and consuming products.

Attack Vector

An attacker requires network reachability to the AHF HTTP endpoint and a low-privilege account. No user interaction is required. The attacker issues crafted HTTP requests against Trace File Analyzer to read AHF-accessible data or perform limited unauthorized writes. Because scope changes, the attacker's actions can affect data governed by other Oracle products that AHF collects from.

Verified exploit code is not publicly available. Refer to the Oracle Security Alert for August 2026 for vendor-supplied technical details.

Detection Methods for CVE-2026-70728

Indicators of Compromise

Unexpected HTTP requests to Trace File Analyzer listener ports from accounts that do not normally administer AHF.
Access to diagnostic bundles, log collections, or trace files by principals outside the DBA or Grid Infrastructure operator groups.
Unusual read or write operations against tfa repository directories on database and Grid Infrastructure hosts.

Detection Strategies

Enable AHF and TFA audit logging and forward events to a centralized SIEM for correlation with authentication telemetry.
Baseline normal TFA HTTP traffic sources and alert on new client IPs, user agents, or credential principals interacting with the endpoint.
Correlate low-privileged Oracle account activity with subsequent access to data belonging to other Oracle products.

Monitoring Recommendations

Monitor the TFA service ports on database and Grid Infrastructure nodes for authenticated sessions initiated from non-administrative subnets.
Track outbound data volumes from AHF hosts to identify bulk collection consistent with diagnostic file exfiltration.
Alert on modifications to AHF configuration or repository files performed outside change windows.

How to Mitigate CVE-2026-70728

Immediate Actions Required

Apply the fixes documented in the Oracle Critical Patch Update Advisory for August 2026 to all affected AHF installations.
Inventory every host running AHF versions 26-26.1.0, 26.2.0, 26.3.1, 26.5.0, or 26.5.2 and prioritize patching internet-adjacent systems.
Rotate credentials for any low-privileged accounts that can authenticate to Trace File Analyzer.

Patch Information

Oracle addressed CVE-2026-70728 as part of the August 2026 Critical Patch Update. Administrators should install the corresponding AHF release published by Oracle for their platform. Details, download links, and version mapping are provided in the Oracle Security Alert.

Workarounds

Restrict network access to the TFA HTTP endpoint using host firewalls or network ACLs so that only trusted management hosts can connect.
Enforce least-privilege on Oracle accounts that can authenticate to AHF and remove unused low-privileged principals.
Disable the TFA HTTP interface on hosts where it is not required for operational tooling until patches are applied.

bash

# Example: restrict TFA HTTP listener to trusted management subnet using iptables
# Replace <TFA_PORT> with the port TFA listens on in your environment
iptables -A INPUT -p tcp --dport <TFA_PORT> -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport <TFA_PORT> -j DROP