CVE-2026-26725 in Print Shop Pro WebDesk
Summary
by MITRE • 02/20/2026
An issue in edu Business Solutions Print Shop Pro WebDesk v.18.34 (fixed in 19.76) allows a remote attacker to escalate privileges via the AccessID parameter.
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Analysis
by VulDB Data Team • 05/17/2026
The vulnerability identified as CVE-2026-26725 affects edu Business Solutions Print Shop Pro WebDesk version 18.34 and represents a critical privilege escalation flaw that can be exploited by remote attackers. This issue stems from inadequate input validation and access control mechanisms within the application's authentication and authorization framework, specifically targeting the AccessID parameter that is used to manage user permissions and system access levels.
The technical flaw manifests when the application fails to properly validate or sanitize the AccessID parameter submitted by users during authentication or access requests. This parameter typically serves as a critical identifier for determining user roles and permissions within the system, yet the vulnerability allows an attacker to manipulate this value to gain elevated privileges beyond their legitimate access rights. The flaw falls under the category of improper input validation as defined by CWE-20, where the application does not adequately verify the integrity and legitimacy of user-supplied data before processing it for access control decisions.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables attackers to potentially assume administrative or elevated user roles within the Print Shop Pro WebDesk environment. Remote exploitation means that attackers do not require physical access to the system or network, making the attack surface significantly broader and more dangerous. Once successfully exploited, the attacker could gain access to sensitive customer data, financial information, or system configuration details that should be restricted to authorized personnel only.
This vulnerability directly relates to the ATT&CK framework's privilege escalation techniques, specifically targeting the T1068 privilege escalation tactic where adversaries seek to gain higher-level permissions within a system. The attack vector aligns with T1566 initial access methods, as remote exploitation typically involves techniques such as web application attacks or network-based reconnaissance to identify and exploit the vulnerable parameter. The affected system may also be susceptible to additional attacks once the privilege escalation is achieved, as the attacker could potentially leverage the elevated access to perform further malicious activities within the network.
Organizations utilizing this software should immediately implement mitigations including input validation controls, parameter sanitization, and comprehensive access control reviews. The recommended approach involves implementing strict validation of the AccessID parameter to ensure it conforms to expected formats and values, along with implementing proper role-based access controls that do not rely solely on user-supplied identifiers. Additionally, network segmentation and monitoring should be enhanced to detect anomalous access patterns that may indicate exploitation attempts. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other system components, while application updates and patches should be applied as soon as vendor-provided fixes become available. The vulnerability demonstrates the critical importance of robust input validation and access control mechanisms in preventing unauthorized privilege escalation attacks that can compromise entire system environments.