CVE Alert: CVE-2025-9201 – Lenovo – Browser

Risk verdict

High risk: potential local code execution via DLL hijacking in affected Lenovo Browser versions; patch to 9.0.6.8111 or later is advised, with no active exploitation indicated in the available data.

Why this matters

DLL hijacking could let a local attacker run code with elevated privileges, compromising integrity and potentially enabling data exposure or tampering. In organisations, this could enable persistence or lateral movement from a single compromised endpoint, impacting productivity and security posture. The CVSS signals high impact across confidentiality, integrity and availability, underscoring potential business disruption.

Most likely attack path

Requires local access with low privileges and no user interaction. An attacker could place a malicious DLL in a vulnerable search path that the Lenovo Browser loads, triggering code execution within the browser process and escalating privileges. Exploitation hinges on CWE-427 dynamics rather than user-induced actions, making the browser a high-value target on endpoints with the vulnerable install.

Who is most exposed

Endpoints with Lenovo Browser preinstalled on Windows machines, particularly corporate laptops, are most at risk. Environments that rely on standard user accounts without strict application controls are more susceptible to lateral movement after initial access.

Detection ideas

• Look for unexpected DLLs loaded into the Lenovo Browser process or modules from non-standard directories.
• Monitor image-load events for browser processes pulling modules from user-writable paths.
• Detect any DLLs with names resembling browser dependencies appearing on the system.
• Correlate process creation with privilege escalation indicators in security logs.
• Use threat-hunting queries targeting CWE-427 patterns in browser-related DLL loads.

Mitigation and prioritisation

• Apply the vendor patch to 9.0.6.8111 or later immediately.
• Enforce least privilege for the browser process; run as a standard user where possible.
• Implement application whitelisting (AppLocker/WDAC) to block untrusted DLLs.
• Tighten DLL search order and ensure DLLs are loaded only from trusted directories; monitor for deviations.
• Schedule verification of patches and conduct targeted testing in a staging environment before broader rollout.