CVE-2025-61546
Published: 08 January 2026
Summary
CVE-2025-61546 is a critical-severity Improper Input Validation (CWE-20) vulnerability in Edubusinesssolutions Print Shop Pro Webdesk. Its CVSS base score is 9.1 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 38.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2025-61546 is an improper input validation vulnerability (CWE-20) in the /PSP/appNET/Store/CartV12.aspx/GetUnitPrice endpoint of edu Business Solutions Print Shop Pro WebDesk version 18.34. It arises from reliance on client-side input validation controls, enabling a remote attacker to submit a negative quantity for items and create financial discrepancies during purchases. The issue has a CVSS v3.1 base score of 9.1 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) and was published on 2026-01-08.
Unauthenticated remote attackers can exploit this vulnerability over the network with low attack complexity and no user interaction required. By manipulating the quantity parameter to a negative value, attackers can achieve high impacts on confidentiality and integrity, specifically generating financial discrepancies such as altered pricing or unauthorized credits through the shopping cart functionality.
The vulnerability is addressed in Print Shop Pro WebDesk version 19.69. Additional details are available in the vulnerability disclosure at https://github.com/chndlrx/vulnerability-disclosures/tree/main/CVE-2025-61546.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-1511
Vulnerability details
There is an issue on the /PSP/appNET/Store/CartV12.aspx/GetUnitPrice endpoint in edu Business Solutions Print Shop Pro WebDesk version 18.34 (fixed in 19.69) that enables remote attacker to create financial discrepancies by purchasing items with a negative quantity. This vulnerability is possible…
more
due to reliance on client-side input validation controls.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Improper input validation on public web endpoint directly enables remote exploitation of a business application (T1190) to manipulate pricing/credits for financial gain (T1657).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly enforces server-side validation of inputs like the quantity parameter to prevent processing of negative values that cause financial discrepancies.
Restricts the types, amounts, and characteristics of inputs such as requiring non-negative integers for quantity at the web endpoint.
Remediates the specific improper input validation flaw by patching to version 19.69 where the vulnerability is fixed.