Attack Chain

1. Reconnaissance: An attacker identifies an internet-facing instance of Aster Telecom Azcall 10/11, potentially through scanning or public search engines.
2. Vulnerability Identification: The attacker leverages knowledge of CVE-2026-15482 and its publicly available exploit details, understanding the SQL injection flaw within the /azcall/adm/gestao_loja/sis.php endpoint.
3. Malicious HTTP Request Crafting: The attacker constructs a specially crafted HTTP GET request targeting the vulnerable endpoint /azcall/adm/gestao_loja/sis.php?t=consultar.
4. SQL Payload Injection: An SQL injection payload is embedded within one of the nome, perfil, or status URL query parameters of the crafted HTTP GET request.
5. Unsanitized Input Processing: The vulnerable HTTP Handler component of Azcall receives and processes the request without adequately validating or sanitizing the malicious input.
6. Backend Database Execution: The injected SQL payload is executed directly by the backend database, resulting in unauthorized query execution.
7. Unauthorized Data Access/Manipulation: The attacker gains unauthorized access to sensitive database information, potentially leading to data exfiltration, modification, or deletion, depending on the injected payload.

Impact

Successful exploitation of CVE-2026-15482 can lead to severe consequences, primarily unauthorized access to and manipulation of the backend database. This includes the potential for full data exfiltration, modification of critical system records, or even deletion of database contents, resulting in data breaches, data loss, and operational disruption. Given the publicly available exploit, all unpatched Aster Telecom Azcall 10/11 instances are at high risk of compromise, potentially exposing customer data, configuration details, or other sensitive organizational information to unauthorized parties. The lack of vendor response further exacerbates the risk, leaving affected organizations without an official patch.

Recommendation

• Implement WAF Rules: Deploy web application firewall (WAF) rules to detect and block SQL injection attempts targeting the /azcall/adm/gestao_loja/sis.php endpoint and its parameters (nome, perfil, status).
• Monitor Webserver Logs: Continuously monitor webserver access logs for suspicious HTTP GET requests to /azcall/adm/gestao_loja/sis.php?t=consultar containing SQL injection patterns in the URL query string to activate the rule below.
• Vulnerability Scanning: Conduct regular vulnerability scanning on all internet-facing web applications to identify and remediate similar web vulnerabilities.
• Patching: Apply any future patches released by Aster Telecom for CVE-2026-15482 immediately upon availability.