CVE-2025-10776 is a vulnerability identified in LionCoders SalePro POS versions up to 5.5.0, specifically related to the Login component. The flaw involves the cleartext transmission of sensitive information during some processing steps within the login functionality. This means that credentials or other sensitive data could be intercepted by an attacker monitoring network traffic. The vulnerability can be exploited remotely without requiring authentication or user interaction, but the attack complexity is high and exploitability is difficult. Despite the difficulty, a public exploit exists, increasing the risk of exploitation. The vendor has not responded to disclosure attempts, and no patches are currently available. The CVSS 4.0 base score is 6.3 (medium severity), reflecting network attack vector, high attack complexity, no privileges or user interaction required, and low impact on confidentiality with no impact on integrity or availability. This vulnerability poses a risk primarily through potential interception of sensitive login data, which could lead to unauthorized access or further attacks if credentials are reused or weak. The lack of encryption in transmission is a fundamental security flaw in a POS system, which typically handles payment and customer data, increasing the sensitivity of the exposed information.

For European organizations using LionCoders SalePro POS, this vulnerability could lead to interception of login credentials or other sensitive information transmitted in cleartext. This exposure risks unauthorized access to POS systems, potentially enabling attackers to manipulate sales data, steal payment information, or disrupt retail operations. Given the POS system's role in processing payment transactions, any compromise could result in financial losses, regulatory non-compliance (e.g., GDPR, PCI DSS), reputational damage, and legal consequences. Retailers and service providers in Europe relying on SalePro POS are at risk, especially those with high transaction volumes or handling sensitive customer payment data. The medium severity score reflects that while the vulnerability does not directly impact system integrity or availability, the confidentiality breach could be leveraged for further attacks or fraud. The high attack complexity and lack of known widespread exploitation somewhat limit immediate risk but do not eliminate it, especially with a public exploit available.

European organizations should immediately assess their deployment of LionCoders SalePro POS versions 5.0 through 5.5.0 and prioritize upgrading to a patched version once available. In the absence of a vendor patch, organizations should implement network-level mitigations such as enforcing encrypted communication channels (e.g., VPNs or TLS tunnels) around POS systems to prevent interception of cleartext data. Network segmentation should isolate POS devices from general networks and restrict access to trusted personnel and systems only. Monitoring network traffic for suspicious activity and employing intrusion detection systems can help detect exploitation attempts. Additionally, organizations should enforce strong credential policies, including unique, complex passwords and multi-factor authentication where possible, to reduce the impact of credential compromise. Regular security audits and employee awareness training on phishing and social engineering can further reduce risk. Finally, organizations should engage with LionCoders for updates and consider alternative POS solutions if vendor support remains absent.