Executive brief
Lenovo Filez is a file-sharing and collaboration application used by organizations to securely exchange files. An improper certificate validation vulnerability allows an attacker who can intercept network traffic to bypass security controls and execute arbitrary code on the user's device, potentially leading to data theft, malware installation, or system compromise.
Technical details
The vulnerability stems from improper validation of SSL/TLS certificates in the Lenovo Filez application. An attacker positioned on the network path (via man-in-the-middle attack) can intercept encrypted communications and, due to the weak certificate validation, inject malicious code or impersonate legitimate servers. This flaw requires the attacker to be on the network (adjacent or network access) but does not require user authentication or interaction beyond normal application use. An exploit enables remote code execution on the affected device. The vulnerability was disclosed on 2026-03-11 and remediation through patched versions is expected from Lenovo.
Affected products
- Lenovo Filez
Timeline
- 2026-03-11: disclosed