**VERSION NOT SUPPORTED WHEN ASSIGNED** A legacy support account in the TriStation software version v4.9.0 and earlier could cause improper access to the TriStation host machine. This was addressed in TriStation version v4.9.1 and v4.10.1 released on May 30, 2013.1

**VERSION NOT SUPPORTED WHEN ASSIGNED** A vulnerability with the former 'password' feature could allow a denial of service attack if the user is not following documented guidelines pertaining to dedicated TriStation connection and key-switch protection. This vulnerability was discovered and remediated in versions v4.9.1 and v4.10.1 on May 30, 2013. This feature is not present in version v4.9.1 and v4.10.1 through current. Therefore, the vulnerability is not present in these versions.

**VERSION NOT SUPPORTED WHEN ASSIGNED** A vulnerability could cause certain data to be visible on the network when the 'password' feature is enabled. This vulnerability was discovered in and remediated in versions v4.9.1 and v4.10.1 on May 30, 2013. The 'password' feature is an additional optional check performed by TS1131 that it is connected to a specific controller. This data is sent as clear text and is visible on the network. This feature is not present in TriStation 1131 versions v4.9.1 and v4.10.1 through current. Therefore, the vulnerability is not present in these versions.

CRLF injection vulnerability in the CGI implementation in Microsoft Internet Information Services (IIS) 4.x and 5.x on Windows NT and Windows 2000 allows remote attackers to modify arbitrary uppercase environment variables via a \n (newline) character in an HTTP header.

NTLM Security Support Provider (NTLMSSP) service does not properly check the function number in an LPC request, which could allow local users to gain administrator level access.

Memory leak in PPTP server in Windows NT 4.0 allows remote attackers to cause a denial of service via a malformed data packet, aka the "Malformed PPTP Packet Stream" vulnerability.

Memory leak in SNMP agent in Windows NT 4.0 before SP5 allows remote attackers to conduct a denial of service (memory exhaustion) via a large number of queries.

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.

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.

Win32k.sys in Windows NT 4.0 before SP2 allows local users to cause a denial of service (crash) by calling certain WIN32K functions with incorrect parameters.

RSH service utility RSHSVC in Windows NT 3.5 through 4.0 does not properly restrict access as specified in the .Rhosts file when a user comes from an authorized host, which could allow unauthorized users to access the service by logging in from an authorized host.

Windows NT TCP/IP processes fragmented IP packets improperly, causing a denial of service.

Windows NT 4.0 before SP3 allows remote attackers to bypass firewall restrictions or cause a denial of service (crash) by sending improperly fragmented IP packets without the first fragment, which the TCP/IP stack incorrectly reassembles into a valid session.