Unquoted Windows search path vulnerability in the guest service in Unisys s-Par before 4.4.20 allows local users to gain privileges via a Trojan horse executable file in the %SYSTEMDRIVE% directory, as demonstrated by program.exe.

The TCP/IP networking module in Unisys ClearPath MCP systems with TCP-IP-SW 57.1 before 57.152, 58.1 before 58.142, or 59.1 before 59.172, when running a TLS 1.2 service, allows remote attackers to cause a denial of service (network connectivity disruption) via a client hello with a signature_algorithms extension above those defined in RFC 5246, which triggers a full memory dump.

Unisys Libra 43xx, 63xx, and 83xx, and FS600 class systems with MCP-FIRMWARE 40.0 before 40.0IC4 Build 270 might allow remote authenticated users to cause a denial of service (data corruption or system crash) via vectors related to using program operators during EPSILON (level 5) based codefiles at peak memory usage, which triggers CPM stack corruption.

Stack-based buffer overflow in mnet.exe in Unisys Business Information Server (BIS) 10 and 10.1 on Windows allows remote attackers to execute arbitrary code via a crafted TCP packet.

The dynamic initialization feature of the ClearPath MCP environment allows remote attackers to cause a denial of service (crash) via a TCP port scan using a tool such as nmap.