CVE-2026-26244: Qnap Video Station SQL Injection Vulnerability

CVE-2026-26244 Overview

CVE-2026-26244 is a SQL injection vulnerability [CWE-89] affecting QNAP Video Station. An authenticated remote attacker with a valid user account can inject malicious SQL statements through the application. Successful exploitation allows execution of unauthorized code or commands against the backend database. QNAP has patched the issue in Video Station 5.8.8 and later releases.

Critical Impact
Authenticated remote attackers can execute unauthorized code or commands by injecting SQL into vulnerable Video Station endpoints, compromising data confidentiality on affected QNAP NAS devices.

Affected Products

QNAP Video Station versions prior to 5.8.8
QNAP NAS devices running vulnerable Video Station builds
Deployments where Video Station is network-exposed to authenticated users

Discovery Timeline

2026-10-15 - CVE-2026-26244 published to NVD
2026-10-16 - Last updated in NVD database

Technical Details for CVE-2026-26244

Vulnerability Analysis

The vulnerability resides in QNAP Video Station, a media management application for QNAP network-attached storage (NAS) appliances. The flaw is classified as Improper Neutralization of Special Elements used in an SQL Command [CWE-89]. An authenticated remote attacker can submit crafted input that the application concatenates into a backend SQL query without proper sanitization or parameterization.

Exploitation requires a valid user account on the target NAS, limiting unauthenticated mass exploitation. However, QNAP NAS devices frequently host multiple user accounts across home and small business environments, where account acquisition is realistic through credential reuse or phishing.

Root Cause

The root cause is improper neutralization of attacker-controlled input incorporated into dynamic SQL statements. Video Station fails to use prepared statements or strict input validation when processing specific request parameters, allowing injected SQL clauses to alter query logic.

Attack Vector

The attack vector is network-based and requires low privileges with no user interaction. An authenticated attacker sends crafted HTTP requests to vulnerable Video Station endpoints over the network. The injected SQL payload is executed within the application's database context, enabling unauthorized read access and, as noted in the vendor advisory, execution of unauthorized code or commands.

No verified public proof-of-concept exploit code is available. See the QNAP Video Station Pro Release Notes for vendor-published technical details.

Detection Methods for CVE-2026-26244

Indicators of Compromise

Anomalous HTTP requests to Video Station URIs containing SQL syntax such as UNION SELECT, OR 1=1, or encoded quote characters
Unexpected Video Station database query errors or long-running queries in NAS system logs
Authenticated sessions originating from unfamiliar IP addresses accessing Video Station endpoints

Detection Strategies

Deploy web application firewall or reverse proxy rules in front of the NAS to flag SQL metacharacters in Video Station request parameters
Correlate authentication events with subsequent Video Station API traffic to identify low-privilege accounts probing database-backed endpoints
Monitor NAS process telemetry for unexpected child processes spawned from Video Station services, indicating potential command execution

Monitoring Recommendations

Forward QNAP system and application logs to a centralized SIEM for retention and query
Alert on repeated 500-class HTTP responses from Video Station, which may indicate injection probing
Track Video Station version strings across the fleet to confirm patched builds are deployed

How to Mitigate CVE-2026-26244

Immediate Actions Required

Upgrade Video Station to version 5.8.8 or later through the QNAP App Center on all affected NAS devices
Audit Video Station user accounts and remove or disable any accounts that are inactive or unnecessary
Enforce strong, unique passwords and enable two-factor authentication for all NAS accounts
Restrict NAS management and Video Station access to trusted networks using the QNAP firewall or an upstream network control

Patch Information

QNAP has released a fixed version of Video Station. Upgrade to Video Station 5.8.8 or later. Patch availability and version history are documented in the QNAP Video Station Pro Release Notes.

Workarounds

Disable the Video Station application in the QNAP App Center until the patched version is installed
Block external access to Video Station ports at the perimeter firewall, allowing only VPN-based access
Remove untrusted or shared low-privilege accounts that could be leveraged by an attacker to meet the authentication precondition

bash

# Verify installed Video Station version via SSH on the QNAP NAS
qpkg_cli --list | grep -i "VideoStation"

# Restrict Video Station access to a trusted subnet (example iptables rule)
iptables -A INPUT -p tcp --dport 8080 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP