(0Day) Microsoft Windows dir Command Improper Character Neutralization Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to display misleading terminal output on affected installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of filenames in the built-in dir command. By including invalid characters in a filename, an attacker can cause the display of misleading text and terminal effects. An attacker can leverage this vulnerability to deceive the user into performing dangerous actions.
Additional Details
04/04/25 - ZDI reported the vulnerability to the vendor
04/04/25 – the vendor acknowledged the receipt of the report
04/09/25 – the vendor asked for technical details
04/09/25 - ZDI provided more information
05/06/25 – the vendor communicated that the reported behavior was not a vulnerability
11/26/25 – ZDI notified the vendor of the intention to publish the case as a 0-day advisory on 12/10/25
-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the product
Disclosure Timeline
- 2025-04-04 - Vulnerability reported to vendor
- 2025-12-10 - Coordinated public release of advisory
- 2025-12-10 - Advisory Updated
Credit
St4nly0n
