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The remote web server is affected by a password policy bypass
Microsoft IIS installs the 'aexp2.htr', 'aexp2b.htr', 'aexp3.htr', or
'aexp4.htr' files in the '/iisadmpwd' directory by default. These
fiels can be used by an attacker to brute-force a valid
username/password. A valid user may also use it to change his password
on a locked account, bypassing password policy.
See also :
Remote the HTR ISAPI filter mapping from IIS and use Microsoft Active
Directory Service Interfaces for handling accounts remotely.
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 8.5
Public Exploit Available : true