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Findings

CVE-2026-50508

ZDI-26-605: Microsoft Windows Localized Filenames Improper Input Validation NTLM Response Information Disclosure Vulnerability

Published Aug 24, 2026

This vulnerability allows remote attackers to disclose NTLM responses 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 ZDI has assigned a CVSS rating of 3.3. The following CVEs are assigned: CVE-2026-50508.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 24, 2026 · Catalog

    Detected

    This vulnerability allows remote attackers to disclose NTLM responses 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 ZDI has assigned a CVSS rating of 3.3. The following CVEs are assigned: CVE-2026-50508.

Sources

  • CVE.orgCVE-2026-50508

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2026-50508

    30-day exploitation probability 0.9%

    first.org
  • Zero Day InitiativeZDI-26-605

    This vulnerability allows remote attackers to disclose NTLM responses 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 ZDI has assigned a CVSS rating of 3.3. The following CVEs are assigned: CVE-2026-50508.

    zerodayinitiative.com