CVE-2025-7636 Overview
CVE-2025-7636 is a SQL injection vulnerability in Ergosis Security Systems Computer Industry and Trade Inc. ZEUS PDKS, a personnel attendance and access control system. The flaw stems from improper neutralization of special elements used in SQL commands [CWE-89]. Authenticated attackers can inject arbitrary SQL statements through application inputs and compromise the underlying database. The vulnerability affects ZEUS PDKS versions from <1.0.5.10 through 10022026. The vendor was contacted before disclosure but did not respond, leaving deployments exposed without a confirmed patch.
Critical Impact
Network-accessible SQL injection allows authenticated attackers to read, modify, or destroy database contents and potentially execute commands on backend systems.
Affected Products
- Ergosis ZEUS PDKS versions earlier than 1.0.5.10
- Ergosis ZEUS PDKS through build 10022026
- All deployments of ZEUS PDKS exposing the application to authenticated users
Discovery Timeline
- 2026-02-10 - CVE-2025-7636 published to NVD
- 2026-04-15 - Last updated in NVD database
Technical Details for CVE-2025-7636
Vulnerability Analysis
The vulnerability is a SQL injection flaw [CWE-89] in the ZEUS PDKS web application. The application concatenates user-supplied input directly into SQL queries without proper parameterization or sanitization. An authenticated attacker with low privileges can submit crafted parameters that alter the structure of backend SQL statements. Successful exploitation produces full impact to confidentiality, integrity, and availability of the database. Because ZEUS PDKS handles personnel and access-control records, exploitation exposes employee identifiers, attendance logs, and authorization data tied to physical access systems.
Root Cause
The root cause is improper neutralization of special characters in SQL commands. The application fails to use prepared statements or strict input validation when constructing queries. Attacker-controlled values containing quote characters, comment markers, and SQL keywords reach the database engine unmodified. This allows query logic to be rewritten at execution time.
Attack Vector
The attack vector is the network. An attacker with valid low-privilege credentials sends crafted HTTP requests containing malicious SQL fragments to vulnerable endpoints. No user interaction is required. Once injected, attackers can enumerate schemas using UNION SELECT payloads, extract authentication material, escalate privileges within the application, or pivot to operating-system commands through database features such as xp_cmdshell where supported.
No verified public proof-of-concept code is available at the time of writing. Refer to the USOM Security Notification TR-26-0052 for the official disclosure.
Detection Methods for CVE-2025-7636
Indicators of Compromise
- HTTP requests to ZEUS PDKS endpoints containing SQL meta-characters such as ', --, ;, UNION, SELECT, or OR 1=1
- Unusual database errors returned to clients, indicating malformed queries reaching the SQL engine
- Spikes in long-running or high-row-count queries originating from the ZEUS PDKS application account
- Unexpected reads against system tables like INFORMATION_SCHEMA or sysobjects
Detection Strategies
- Deploy web application firewall signatures targeting SQL injection patterns on ZEUS PDKS request paths
- Enable database audit logging and alert on queries containing tautologies, stacked statements, or schema-enumeration syntax
- Correlate authentication events with subsequent anomalous query volume from the same session
Monitoring Recommendations
- Monitor outbound connections from the ZEUS PDKS database host for signs of data exfiltration
- Track failed login attempts followed by successful authentications to detect credential abuse preceding exploitation
- Review application logs for HTTP 500 responses tied to specific parameters, which often signal injection probing
How to Mitigate CVE-2025-7636
Immediate Actions Required
- Restrict network access to the ZEUS PDKS application to trusted management networks and VPN-connected users only
- Rotate credentials for all ZEUS PDKS application and database accounts to invalidate any previously stolen material
- Place a web application firewall in front of the application with SQL injection rules enabled in blocking mode
- Reduce privileges of the database service account used by ZEUS PDKS to the minimum required
Patch Information
The vendor was contacted before public disclosure but did not respond, and no official patch has been confirmed at the time of publication. Operators of ZEUS PDKS should monitor the vendor channels and the USOM Security Notification TR-26-0052 for fix availability. Until a patch is released, treat all deployments of versions through build 10022026 as vulnerable.
Workarounds
- Place ZEUS PDKS behind a reverse proxy that enforces strict input validation on query and form parameters
- Apply database-layer least privilege so the application account cannot execute xp_cmdshell, modify schemas, or read sensitive system tables
- Enable query parameterization at any middleware layer that can rewrite requests, and log blocked patterns for investigation
- Segment the ZEUS PDKS database server from general corporate networks to limit lateral movement after compromise
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
