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ZDI-26-293 MEDIUM 4.3 Published Apr 21, 2026

Microsoft Office URI Handler NTLM Response Information Disclosure Vulnerability

Microsoft

This vulnerability allows remote attackers to disclose NTLM responses on affected installations of Microsoft Office. 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 4.3.

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