CVE-2024-13086 Overview
CVE-2024-13086 is an information exposure vulnerability affecting QNAP QTS and QuTS hero operating systems used on QNAP network-attached storage (NAS) devices. Remote attackers can exploit the flaw over the network without authentication or user interaction to access sensitive information. The weakness is categorized under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor. QNAP addressed the issue in QTS 5.2.0.2851 build 20240808 and QuTS hero h5.2.0.2851 build 20240808.
Critical Impact
Unauthenticated remote attackers can retrieve sensitive data from affected QNAP NAS systems, undermining the confidentiality of stored information and potentially aiding further compromise.
Affected Products
- QNAP QTS versions prior to 5.2.0.2851 build 20240808
- QNAP QuTS hero versions prior to h5.2.0.2851 build 20240808
- QNAP NAS appliances running the affected firmware
Discovery Timeline
- 2025-03-07 - CVE-2024-13086 published to the National Vulnerability Database
- 2026-01-30 - Last updated in NVD database
Technical Details for CVE-2024-13086
Vulnerability Analysis
The vulnerability is an information exposure issue in QNAP's QTS and QuTS hero operating systems. Attackers reach the flaw across the network without prior authentication and without user interaction. Successful exploitation discloses sensitive information from the affected NAS device. The impact is limited to confidentiality, with no direct effect on integrity or availability per the published CVSS vector.
QNAP's advisory QSA-25-03 confirms the issue and identifies the fixed builds. The vendor has not published a detailed root-cause breakdown, exploit code, or proof-of-concept artifacts at the time of writing. Public exploit databases and CISA's Known Exploited Vulnerabilities catalog do not list this CVE.
Root Cause
The defect maps to CWE-200, indicating that a component within QTS or QuTS hero returns or stores sensitive data in a manner accessible to unauthorized parties. QNAP has not disclosed the specific service, endpoint, or data class involved. Refer to the QNAP Security Advisory QSA-25-03 for the official description and remediation status.
Attack Vector
The attack vector is network-based with low attack complexity. An attacker can reach the vulnerable interface on any QNAP NAS exposed to a hostile network segment, including internet-facing deployments. No credentials and no user interaction are required, which raises the risk for devices that publish management or storage services beyond a trusted LAN.
Detection Methods for CVE-2024-13086
Indicators of Compromise
- Unexpected outbound transfers of NAS metadata or files to unfamiliar IP addresses
- Repeated unauthenticated requests to QTS or QuTS hero web services from a single external source
- Access log entries showing data retrieval without a preceding successful authentication event
Detection Strategies
- Inventory QNAP NAS devices and compare installed firmware against the fixed versions QTS 5.2.0.2851 build 20240808 and QuTS hero h5.2.0.2851 build 20240808.
- Review QTS and QuTS hero access logs for anomalous request patterns targeting management interfaces.
- Monitor perimeter firewalls for inbound connections to QNAP services from untrusted networks.
Monitoring Recommendations
- Forward NAS system logs to a centralized logging platform for correlation and retention.
- Alert on spikes in HTTP/HTTPS requests to QNAP administrative endpoints originating outside management subnets.
- Track configuration changes and firmware versions across all QNAP appliances on a continuous basis.
How to Mitigate CVE-2024-13086
Immediate Actions Required
- Upgrade QTS to version 5.2.0.2851 build 20240808 or later.
- Upgrade QuTS hero to version h5.2.0.2851 build 20240808 or later.
- Restrict NAS management interfaces to trusted networks and remove direct internet exposure.
- Audit user accounts on affected devices and rotate credentials that may have been disclosed.
Patch Information
QNAP released fixed firmware in QTS 5.2.0.2851 build 20240808 and QuTS hero h5.2.0.2851 build 20240808. Apply updates through the QTS Control Panel under System > Firmware Update or download the firmware images from the QNAP support portal. Full remediation details are in QNAP Security Advisory QSA-25-03.
Workarounds
- Place QNAP NAS devices behind a VPN and disable direct WAN access to administrative services.
- Apply network access control lists that limit NAS connectivity to specific management hosts.
- Disable unused services such as remote access, UPnP, and port forwarding on the NAS until patching completes.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
