CVE-2026-19735: Use of Insufficiently Random Values

The RFC 6528 initial-sequence-number implementation in subsys/net/ip/tcp.c derived every TCP ISN from SHA-256uniquekey || four-tuple plus a uptime-derived offset, where uniquekey is a 128-bit secret filled once by syscsrandget. The return value of that call was discarded and the once guard was...

PT-2026-110222

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description An issue exists in the RFC 6528 initial-sequence-number ISN implementation within subsys/net/ip/tcp.c. The system derives the TCP ISN using a 128-bit secret uniq...

CVE-2020-28388

A vulnerability has been identified in APOGEE PXC Compact BACnet All versions V3.5.5, APOGEE PXC Compact P2 Ethernet All versions V2.8.20, APOGEE PXC Modular BACnet All versions V3.5.5, APOGEE PXC Modular P2 Ethernet All versions V2.8.20, Nucleus NET All versions V5.2, Nucleus ReadyStart V3 All...

CVE-2020-28388: Predictable Exact Value from Previous Values

A vulnerability has been identified in APOGEE PXC Compact BACnet All versions V3.5.5, APOGEE PXC Compact P2 Ethernet All versions V2.8.20, APOGEE PXC Modular BACnet All versions V3.5.5, APOGEE PXC Modular P2 Ethernet All versions V2.8.20, Nucleus NET All versions V5.2, Nucleus ReadyStart V3 All...

CVE-2015-3963: Use of Insufficiently Random Values

Wind River VxWorks before 5.5.1, 6.5.x through 6.7.x before 6.7.1.1, 6.8.x before 6.8.3, 6.9.x before 6.9.4.4, and 7.x before 7 ipnetcoreip 1.2.2.0, as used on Schneider Electric SAGE RTU devices before J2 and other devices, does not properly generate TCP initial sequence number ISN values, which...

CVE-2014-9201: Improper Input Validation

Beckwith Electric M-6200 Digital Voltage Regulator Control with firmware before D-0198V04.07.00, M-6200A Digital Voltage Regulator Control with firmware before D-0228V02.01.07, M-2001D Digital Tapchanger Control with firmware before D-0214V01.10.04, M-6283A Three Phase Digital Capacitor Bank...

CVE-2002-1463: Undefined Security Weakness

Symantec Raptor Firewall 6.5 and 6.5.3, Enterprise Firewall 6.5.2 and 7.0, VelociRaptor Models 500/700/1000 and 1100/1200/1300, and Gateway Security 5110/5200/5300 generate easily predictable initial sequence numbers ISN, which allows remote attackers to spoof connections...

CVE-2000-0328: Undefined Security Weakness

Windows NT 4.0 generates predictable random TCP initial sequence numbers ISN, which allows remote attackers to perform spoofing and session hijacking...