CVE-2020-27635

In PicoTCP 1.7.0, TCP ISNs are improperly random...

CVE-2020-27633

CVE-2020-27633 affects FNET 4.6.3, where TCP Initial Sequence Numbers (ISNs) are generated with insufficient randomness, enabling potential spoofing or disruption of TCP connections. The vulnerability is caused by a predictable ISN generation in FNET’s TCP stack, with no explicit exploitation det...

CVE-2020-27213

CVE-2020-27213 affects Ethernut Nut/OS 5.1 where ISN generation for TCP is derived from a insufficiently random source, enabling an attacker to determine ISN values for current and future connections and potentially hijack or spoof TCP connections. The issue is documented across multiple trusted ...

CVE-2020-27213

An issue was discovered in Ethernut Nut/OS 5.1. The code that generates Initial Sequence Numbers ISNs for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existin...

CVE-2020-27635

CVE-2020-27635 affects PicoTCP 1.7.0, where ISN (Initial Sequence Number) generation is improperly random, using a predictable/linear-congruential approach. This weakness can enable spoofing or disruption of TCP connections, potentially aiding unauthorized access or data exposure. The CVSS base s...

K19063943: TCP initial sequence number vulnerability CVE-2001-0328

Security Advisory Description TCP implementations that use random increments for initial sequence numbers ISN can allow remote attackers to perform session hijacking or disruption by injecting a flood of packets with a range of ISN values, one of which may match the expected ISN. CVE-2001-0328...

K15301: Linux kernel TCP ISN vulnerability CVE-2011-3188

Security Advisory Description The 1 IPv4 and 2 IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service disrupted networking or hijack...

CVE-2022-43501

KASAGO TCP/IP stack provided by Zuken Elmic generates ISNsInitial Sequence Number for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones...

Buffer overflow

KASAGO TCP/IP stack provided by Zuken Elmic generates ISNsInitial Sequence Number for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones...

CVE-2022-43501

CVE-2022-43501 concerns the KASAGO TCP/IP stack from Zuken Elmic, which uses an insufficiently random generator for TCP Initial Sequence Numbers (ISNs). This weak RNG can allow an attacker to determine ISNs for current or future connections, enabling session hijacking or spoofing of new connectio...

KASAGO IPv6/v4 Dual 安全特征问题漏洞

KASAGO IPv6/v4 Dual is KASAGO's protocol middleware for TCP/IP communication. A security vulnerability exists in KASAGO IPv6/v4 Dual that stems from an insufficiently randomized ISN Initial Sequence Number. An attacker can exploit this vulnerability to predict the value of the ISN...

CVE-2021-45488

In NetBSD through 9.2, there is an information leak in the TCP ISN ISS generation algorithm...

Information disclosure

In NetBSD through 9.2, there is an information leak in the TCP ISN ISS generation algorithm...

CVE-2021-45488

The CVE-2021-45488 issue affects NetBSD up to 9.2, involving an information leak in the TCP ISN (ISS) generation algorithm within the IP/TCP stack. The root cause is an information disclosure flaw in how ISNs are generated, enabling partial exposure of sensitive data. Publicly documented details ...

Vulnerability of the Siemens LOGO! CMR family and SIMATIC RTU 3000 family security feature issues

The LOGO! CMR family is a communication system for monitoring and controlling distributed devices and systems via text messages or e-mail.Siemens SIMATIC RTU3000C is a compact RTU from Siemens, Germany is a low-power remote terminal unit RTU for energy self-sufficiency. A vulnerability in the...

CVE-2021-37186

A vulnerability has been identified in LOGO! CMR2020 All versions V2.2, LOGO! CMR2040 All versions V2.2, SIMATIC RTU3010C All versions V4.0.9, SIMATIC RTU3030C All versions V4.0.9, SIMATIC RTU3031C All versions V4.0.9, SIMATIC RTU3041C All versions V4.0.9. The underlying TCP/IP stack does not...

Information disclosure

A vulnerability has been identified in LOGO! CMR2020 All versions V2.2, LOGO! CMR2040 All versions V2.2, SIMATIC RTU3010C All versions V4.0.9, SIMATIC RTU3030C All versions V4.0.9, SIMATIC RTU3031C All versions V4.0.9, SIMATIC RTU3041C All versions V4.0.9. The underlying TCP/IP stack does not...

CVE-2021-37186

Summary of CVE-2021-37186 : Siemens LOGO! CMR2020/CMR2040 and SIMATIC RTU3000 family implement an insufficiently random Initial Sequence Number (ISN) generator in their TCP/IP stack. This can allow an adjacent attacker with LAN access to interfere with traffic, spoof connections, and potentially ...

Siemens SIMATIC 安全特征问题漏洞

The LOGO! CMR family is a communication system for monitoring and controlling distributed devices and systems via text messages or e-mail.Siemens SIMATIC RTU3000C is a compact RTU from Siemens, Germany is a low-power remote terminal unit RTU for energy self-sufficiency. A vulnerability in the...

CVE-2020-35685

An issue was discovered in HCC Nichestack 3.0. The code that generates Initial Sequence Numbers ISNs for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing...