Vulnerabilities
CVE-2026-83713: Local Information Disclosure via Windows UDFS Driver
Microsoft has disclosed an out‑of‑bounds read in the Universal Disk Format (UDFS) file‑system driver that can leak data to any user with local privileges. The flaw is limited to local execution and does not allow remote code execution. Defenders should verify that the latest UDFS patch is installed and disable the driver if not required.
What Happened
Microsoft identified an out‑of‑bounds read in the Windows Universal Disk Format (UDFS) file‑system driver. The flaw allows an attacker with local access to read memory beyond intended bounds, potentially exposing sensitive data.
Impact
The vulnerability is strictly local; it does not provide remote code execution or privilege escalation. However, any user with local privileges can read data that should be protected, which can aid in further attacks.
Mitigation
- Apply the latest Windows security update that patches the UDFS driver.
- Verify the patch by checking the driver version in Device Manager.
- If UDFS is not required for your environment, disable the driver via Group Policy or registry.
- Monitor for anomalous UDFS activity using event logs and endpoint detection tools.
Related vulnerabilities
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