CVE-2026-7484 in AVESİS
Summary
by MITRE • 07/24/2026
External control of Assumed-Immutable web parameter vulnerability in ABIS Technology Ltd. Co. AVESİS allows Accessing Functionality Not Properly Constrained by ACLs.
This issue affects AVESİS: before 202606251646.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 07/24/2026
This vulnerability represents a critical access control flaw in the AVESİS system developed by ABIS Technology Ltd. Co. The weakness stems from improper validation of web parameters that are assumed to be immutable, creating a pathway for unauthorized privilege escalation and functionality access. The vulnerability falls under the category of external control of assumed-immutable parameters, where attacker-controlled inputs can manipulate system behavior in ways that bypass intended security controls.
The technical implementation of this flaw allows malicious actors to manipulate web parameters that should remain constant and secure, effectively circumventing access control lists that are meant to constrain user functionality. This type of vulnerability typically occurs when applications fail to properly validate or sanitize input parameters that are expected to remain unchanged throughout a session or transaction. The issue specifically impacts systems where certain parameters are treated as immutable but can still be modified by external parties.
From an operational perspective, this vulnerability creates significant risk exposure for organizations using AVESİS software versions prior to 202606251646. Attackers can exploit this weakness to gain access to functionality that should be restricted based on user roles or permissions, potentially leading to data breaches, unauthorized system modifications, or complete system compromise. The impact extends beyond simple privilege escalation as it undermines the fundamental security model of the application.
This vulnerability aligns with CWE-285, which addresses improper authorization in access control systems, and represents a classic example of how external input manipulation can bypass security controls. The ATT&CK framework categorizes this under privilege escalation techniques where adversaries leverage application weaknesses to gain elevated access rights. Organizations should implement comprehensive parameter validation and ensure that all web parameters undergo proper sanitization before being processed by the system.
Mitigation strategies must include immediate patching of affected AVESİS versions to 202606251646 or later, along with implementation of robust input validation mechanisms. Security teams should conduct thorough code reviews to identify similar parameter handling patterns throughout the application, establish proper parameter immutability checks, and implement comprehensive access control testing procedures. Additionally, organizations should consider network segmentation and monitoring solutions to detect unusual parameter manipulation attempts that could indicate exploitation of this vulnerability.