Windows NT Service Control Manager (SCM) allows remote attackers to cause a denial of service via a malformed argument in a resource enumeration request.

Windows NT does not properly download a system policy if the domain user logs into the domain with a space at the end of the domain name.

Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.

Windows NT Local Security Authority (LSA) allows remote attackers to cause a denial of service via malformed arguments to the LsaLookupSids function which looks up the SID, aka "Malformed Security Identifier Request."

The "AEDebug" registry key is installed with insecure permissions, which allows local users to modify the key to specify a Trojan Horse debugger which is automatically executed on a system crash.

Windows NT 4.0 does not properly shut down invalid named pipe RPC connections, which allows remote attackers to cause a denial of service (resource exhaustion) via a series of connections containing malformed data, aka the "Named Pipes Over RPC" vulnerability.

Windows NT 4.0 allows remote attackers to cause a denial of service (crash) via extra source routing data such as (1) a Routing Information Field (RIF) field with a hop count greater than 7, or (2) a list containing duplicate Token Ring IDs.

Tcpip.sys in Windows NT 4.0 before SP4 allows remote attackers to cause a denial of service via an ICMP Subnet Mask Address Request packet, when certain multiple IP addresses are bound to the same network interface.

The PATH in Windows NT includes the current working directory (.), which could allow local users to gain privileges by placing Trojan horse programs with the same name as commonly used system programs into certain directories.

Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service (crash) by returning 0.0.0.0 as the IP address for a DNS host name lookup.

LSA (LSASS.EXE) in Windows NT 4.0 allows remote attackers to cause a denial of service via a NULL policy handle in a call to (1) SamrOpenDomain, (2) SamrEnumDomainUsers, and (3) SamrQueryDomainInfo.

Windows 95, 98, and NT 4.0 allow remote attackers to cause a denial of service by spoofing ICMP redirect messages from a router, which causes Windows to change its routing tables.

TCP/IP implementation in Microsoft Windows 95, Windows NT 4.0, and possibly others, allows remote attackers to reset connections by forcing a reset (RST) via a PSH ACK or other means, obtaining the target's last sequence number from the resulting packet, then spoofing a reset to the target.

Office Shortcut Bar (OSB) in Windows 3.51 enables backup and restore permissions, which are inherited by programs such as File Manager that are started from the Shortcut Bar, which could allow local users to read folders for which they do not have permission.

Passfilt.dll in Windows NT SP2 allows users to create a password that contains the user's name, which could make it easier for an attacker to guess.

Windows NT 4.0 SP4 and earlier allows local users to gain privileges by modifying the symbolic link table in the \?? object folder using a different case letter (upper or lower) to point to a different device.

When an administrator in Windows NT or Windows 2000 changes a user policy, the policy is not properly updated if the local ntconfig.pol is not writable by the user, which could allow local users to bypass restrictions that would otherwise be enforced by the policy, possibly by changing the policy file to be read-only.

When the Ntconfig.pol file is used on a server whose name is longer than 13 characters, Windows NT does not properly enforce policies for global groups, which could allow users to bypass restrictions that were intended by those policies.

Windows NT 4.0 allows local users to cause a denial of service via a user mode application that closes a handle that was opened in kernel mode, which causes a crash when the kernel attempts to close the handle.

Denial of service in RPCSS.EXE program (RPC Locator) in Windows NT.