CVE-2026-7698: Tiandy Easy7 Platform RCE Vulnerability

CVE-2026-7698 Overview

CVE-2026-7698 is an operating system command injection vulnerability in Tiandy Easy7 Integrated Management Platform version 7.17.0. The flaw resides in the /Easy7/rest/systemInfo/updateDbBackupInfo endpoint, where the week parameter is passed to the underlying shell without sanitization. Remote attackers can inject arbitrary operating system commands through this parameter. The vulnerability is classified under [CWE-77] Improper Neutralization of Special Elements used in a Command. Public exploit details are available, and the vendor did not respond to disclosure attempts according to the VulDB Vulnerability #360867 record.

Critical Impact
Unauthenticated remote attackers can execute arbitrary operating system commands on the Easy7 host through the week parameter, compromising the integrated video management platform.

Affected Products

Tiandy Easy7 Integrated Management Platform 7.17.0
Deployments exposing the /Easy7/rest/systemInfo/updateDbBackupInfo REST endpoint
Installations without compensating network access controls

Discovery Timeline

2026-05-03 - CVE-2026-7698 published to NVD
2026-05-05 - Last updated in NVD database

Technical Details for CVE-2026-7698

Vulnerability Analysis

The vulnerability exists in the database backup configuration handler exposed at /Easy7/rest/systemInfo/updateDbBackupInfo. The endpoint accepts a week argument that controls the scheduling of backup operations. The application concatenates this user-controlled value into a shell command without input validation or argument escaping.

An attacker submits a crafted HTTP request containing shell metacharacters within the week field. The Easy7 backend executes the resulting command string in the context of the service account running the platform. Successful exploitation grants command execution on the host operating system.

The attack requires no authentication, no user interaction, and operates over the network. According to the EPSS model dated 2026-05-07, the probability of exploitation activity is 1.284% at the 79.7 percentile.

Root Cause

The root cause is improper neutralization of special elements used in an operating system command [CWE-77]. The updateDbBackupInfo handler treats the week parameter as trusted scheduling data and forwards it directly into a shell invocation. Characters such as ;, |, &, and backticks retain their shell semantics, allowing command chaining and substitution.

Attack Vector

The attack vector is network-based. An attacker reaches the REST endpoint over HTTP or HTTPS and sends a POST request containing a malicious week value. The Easy7 service evaluates the parameter as part of a shell command, executing attacker-supplied operating system instructions. Because the endpoint requires no credentials, internet-exposed installations are reachable by any remote actor.

The exploitation mechanism is documented in the Feishu Wiki Resource and the VulDB CTI for #360867. No verified exploit code is reproduced here.

Detection Methods for CVE-2026-7698

Indicators of Compromise

HTTP requests to /Easy7/rest/systemInfo/updateDbBackupInfo containing shell metacharacters such as ;, |, &, $(), or backticks in the week parameter
Child processes spawned by the Easy7 service that are not part of normal backup workflows, including sh, cmd.exe, powershell.exe, curl, wget, or certutil
Outbound network connections from the Easy7 host to unfamiliar destinations following requests to the affected endpoint
New scheduled tasks, cron jobs, or persistence artifacts created by the Easy7 service account

Detection Strategies

Inspect web server and application logs for POST requests to updateDbBackupInfo and parse the week field for non-numeric content
Deploy web application firewall rules that match command injection payload patterns against the week parameter
Correlate process creation telemetry with parent processes belonging to the Easy7 platform to flag anomalous shell execution

Monitoring Recommendations

Forward Easy7 application logs and host process telemetry to a centralized analytics platform for retrospective hunting
Alert on any execution of interpreters or download utilities by the Easy7 service account
Monitor egress traffic from servers hosting Easy7 for connections to external IPs not on an established allow list

How to Mitigate CVE-2026-7698

Immediate Actions Required

Restrict network access to the Easy7 management interface so that only trusted administrative networks can reach /Easy7/rest/systemInfo/updateDbBackupInfo
Place the platform behind a reverse proxy or web application firewall configured to block shell metacharacters in the week parameter
Audit existing Easy7 hosts for indicators listed above and rotate credentials stored on or accessible from the affected systems
Review and reduce the privileges of the service account running the Easy7 platform to limit blast radius

Patch Information

No vendor patch is currently referenced in the advisory. The VulDB Vulnerability #360867 entry states that Tiandy did not respond to disclosure outreach. Operators should track the VulDB Submission #804048 record and the vendor support channels for future fixes.

Workarounds

Block external access to the /Easy7/rest/systemInfo/ REST path at the perimeter until a patch is published
Apply web application firewall signatures that reject requests where the week parameter contains characters outside an expected numeric range
Disable or remove the database backup scheduling feature if it is not used in the deployment
Isolate the Easy7 host on a segmented management VLAN with strict egress filtering

bash

# Example nginx configuration restricting access to the vulnerable endpoint
location /Easy7/rest/systemInfo/updateDbBackupInfo {
    allow 10.0.0.0/24;   # trusted admin subnet
    deny  all;
    if ($arg_week !~ "^[0-7]$") {
        return 400;
    }
    proxy_pass http://easy7_backend;
}