CVE-2025-9802: RemoteClinic 2.0 SQL Injection Vulnerability

CVE-2025-9802 Overview

CVE-2025-9802 is a SQL injection vulnerability affecting RemoteClinic 2.0, a web-based clinic management application. The flaw resides in /staff/profile.php, where the ID parameter is passed to a database query without proper sanitization. Attackers with authenticated high-privilege access can manipulate the ID argument to inject arbitrary SQL statements. The vulnerability is exploitable remotely over the network and maps to [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component). Public technical details have been disclosed through VulDB and a GitHub issue tracker, increasing the likelihood of exploitation attempts against exposed deployments.

Critical Impact
Successful exploitation allows attackers to read, modify, or delete records in the RemoteClinic database, including patient and staff information stored by the clinic management platform.

Affected Products

RemoteClinic 2.0
/staff/profile.php endpoint (vulnerable component)
Deployments exposing the staff profile page to untrusted networks

Discovery Timeline

2025-09-02 - CVE-2025-9802 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-9802

Vulnerability Analysis

The vulnerability exists in the staff profile handler at /staff/profile.php. The script accepts an ID parameter from the request and incorporates the value into a SQL query without parameterization or input validation. This allows an attacker to break out of the query context and append arbitrary SQL clauses.

Exploitation requires network access to the application and authenticated access at a high privilege level. No user interaction is required. Because the injection point sits inside a profile lookup query, an attacker can enumerate table structures, extract stored data, or manipulate records. Impacts to confidentiality, integrity, and availability are each rated as low by the CVSS 4.0 vector, reflecting the limited scope of a single application database.

Root Cause

The root cause is improper neutralization of user-supplied input before it is concatenated into a SQL statement. The ID parameter is not validated, cast to a numeric type, or bound as a prepared-statement parameter. This pattern falls under [CWE-74] and is a common failure in PHP applications that build queries through string concatenation with raw request values.

Attack Vector

An authenticated attacker sends a crafted HTTP request to /staff/profile.php with a malicious ID parameter containing SQL metacharacters and injected clauses. Because the input is embedded directly into the query, the injected fragment executes with the privileges of the database user assigned to the RemoteClinic application. Attackers commonly follow this pattern with UNION-based extraction, boolean-based blind techniques, or time-based inference to enumerate schema and exfiltrate data.

No verified proof-of-concept code is published in the referenced sources. Refer to the GitHub CVE Issue Discussion and VulDB entry #322117 for further technical context.

Detection Methods for CVE-2025-9802

Indicators of Compromise

HTTP requests to /staff/profile.php containing SQL metacharacters in the ID parameter, such as single quotes, UNION SELECT, SLEEP(, or comment sequences (--, #, /*).
Web server or PHP error logs referencing MySQL syntax errors originating from profile.php.
Unexpected outbound database queries, schema enumeration activity, or bulk SELECT operations against RemoteClinic tables.

Detection Strategies

Deploy signatures on the web application firewall (WAF) or reverse proxy that inspect the ID parameter for SQL injection payloads.
Correlate authenticated staff sessions against anomalous access patterns to /staff/profile.php, including high request rates or malformed values.
Enable database query logging and alert on queries that reference staff or profile tables with unusual WHERE clauses or unions.

Monitoring Recommendations

Ingest web server access logs, PHP error logs, and MySQL general or audit logs into a centralized analytics pipeline for query pattern analysis.
Baseline normal ID parameter values (typically numeric) and alert on deviations that include non-numeric characters.
Monitor privileged staff accounts for session anomalies that could indicate credential compromise leading to exploitation of this bug.

How to Mitigate CVE-2025-9802

Immediate Actions Required

Restrict network exposure of the RemoteClinic application, particularly the /staff/ directory, to trusted networks or VPN users.
Rotate credentials for high-privilege staff accounts that could be abused to reach the vulnerable endpoint.
Review database audit logs for signs of prior exploitation, including unexpected schema enumeration or bulk data reads.

Patch Information

No vendor patch is referenced in the available advisories for CVE-2025-9802. Operators should track the GitHub CVE Issue Discussion and the VulDB entry #322117 for updates. Until a fixed release is available, apply the workarounds below and consider a virtual patch at the WAF layer.

Workarounds

Deploy a WAF rule that rejects requests to /staff/profile.php when the ID parameter contains non-numeric characters.
Modify /staff/profile.php to cast the ID parameter to an integer or use prepared statements with bound parameters before executing the query.
Enforce least-privilege on the database account used by RemoteClinic so injected queries cannot access unrelated schemas or perform destructive operations.

bash

# Example ModSecurity rule to block non-numeric ID values on the vulnerable endpoint
SecRule REQUEST_URI "@streq /staff/profile.php" \
    "phase:2,chain,deny,status:400,id:1009802,msg:'CVE-2025-9802 SQLi attempt on staff/profile.php'"
    SecRule ARGS:ID "!@rx ^[0-9]+$" "t:none"