CVE-2025-11544 in NP-P627UL
Summary
by MITRE • 12/22/2025
Improper Validation of Integrity Check Value vulnerability in Sharp Display Solutions projectors allows a attacker may create and run unauthorized firmware.
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Analysis
by VulDB Data Team • 12/22/2025
The CVE-2025-11544 vulnerability represents a critical flaw in the firmware update mechanism of Sharp Display Solutions projectors that fundamentally undermines the device's security posture. This vulnerability resides in the improper validation of integrity check values, which serves as a critical control mechanism for ensuring that only authenticated and verified firmware updates can be installed on the device. The flaw allows attackers to bypass the integrity verification process that is designed to prevent unauthorized firmware modifications, creating a pathway for malicious actors to install unauthorized firmware versions on affected projectors.
The technical nature of this vulnerability aligns with CWE-347, which specifically addresses improper validation of integrity check values, making it a direct implementation of a well-known software security weakness. The flaw manifests when the projector's firmware update process fails to properly verify cryptographic signatures or checksums that should confirm the authenticity and integrity of the firmware being installed. Attackers can exploit this weakness by crafting malicious firmware images that contain unauthorized code, which the device will accept and execute due to the inadequate validation checks. This vulnerability operates at the intersection of software security and hardware security, as it affects the device's ability to maintain a secure boot process and prevent unauthorized modifications to its core operating system.
The operational impact of this vulnerability is severe and multifaceted, as it enables attackers to gain persistent control over affected Sharp Display Solutions projectors. Once an attacker successfully installs unauthorized firmware, they can execute arbitrary code on the device, potentially gaining complete administrative control over the projector's functionality. This could allow for remote surveillance capabilities where the projector's camera or microphone might be activated without user knowledge, or the device could be used as a pivot point for further network infiltration. The vulnerability also enables the installation of backdoors that persist across reboots, making detection and remediation significantly more challenging. The attack surface extends beyond simple unauthorized access, as compromised projectors could be used for data exfiltration, network reconnaissance, or as part of larger distributed attacks against connected networks.
From an adversarial perspective, this vulnerability maps directly to several ATT&CK techniques including T1547.001 for registry run keys and T1059 for command and scripting interpreter, as attackers could leverage the compromised device to establish persistent access and execute malicious commands. The vulnerability also relates to T1071.004 for application layer protocol and T1566 for credential harvesting, as compromised projectors could be used to gather network credentials or intercept communications. Organizations should implement immediate mitigations including disabling firmware update capabilities where possible, implementing network segmentation to isolate affected devices, and conducting thorough network scans to identify potentially compromised projectors. The remediation process requires firmware updates from Sharp Display Solutions, but organizations should also consider implementing network monitoring solutions to detect unusual network traffic patterns that might indicate unauthorized firmware installation attempts. Additionally, physical security measures should be enhanced to prevent unauthorized access to projector devices, particularly in environments where sensitive information is displayed or processed.