Unknown vulnerability in the H.323 protocol implementation in Windows 98, Windows 2000, Windows XP, and Windows Server 2003 allows remote attackers to execute arbitrary code.

Stack-based buffer overflow in certain Active Directory service functions in LSASRV.DLL of the Local Security Authority Subsystem Service (LSASS) in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, XP SP1, Server 2003, NetMeeting, Windows 98, and Windows ME, allows remote attackers to execute arbitrary code via a packet that causes the DsRolerUpgradeDownlevelServer function to create long debug entries for the DCPROMO.LOG log file, as exploited by the Sasser worm.

Buffer overflow in the Private Communications Transport (PCT) protocol implementation in the Microsoft SSL library, as used in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, XP SP1, Server 2003, NetMeeting, Windows 98, and Windows ME, allows remote attackers to execute arbitrary code via PCT 1.0 handshake packets.

Stack-based buffer overflow in eZnet.exe, as used in eZ (a) eZphotoshare, (b) eZmeeting, (c) eZnetwork, and (d) eZshare allows remote attackers to cause a denial of service (crash) or execute arbitrary code, as demonstrated via (1) a long GET request and (2) a long operation or autologin parameter to SwEzModule.dll.

Directory traversal vulnerability in Microsoft NetMeeting 3.01 2000 before SP4 allows remote attackers to read arbitrary files via "..\.." (dot dot) sequences in a file transfer request.

Microsoft NetMeeting 3.01 2000 before SP4 allows remote attackers to cause a denial of service (shutdown of NetMeeting conference) via malformed packets, as demonstrated via the chat conversation.

The Remote Desktop Sharing (RDS) Screen Saver Protection capability for Microsoft NetMeeting 3.01 through SP2 (4.4.3396) allows attackers with physical access to hijack remote sessions by entering certain logoff or shutdown sequences (such as CTRL-ALT-DEL) and canceling out of the resulting user confirmation prompts, such as when the remote user is editing a document.

Microsoft NetMeeting 3.01 with Remote Desktop Sharing enabled allows remote attackers to cause a denial of service via a malformed string to the NetMeeting service port, aka a variant of the "NetMeeting Desktop Sharing" vulnerability.

Microsoft NetMeeting with Remote Desktop Sharing enabled allows remote attackers to cause a denial of service (CPU utilization) via a sequence of null bytes to the NetMeeting port, aka the "NetMeeting Desktop Sharing" vulnerability.

Meeting Maker uses weak encryption (a polyalphabetic substitution cipher) for passwords, which allows remote attackers to sniff and decrypt passwords for Meeting Maker accounts.