CVE-1999-0770

Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems...

Siemens SIMATIC S7-1500 Observable Discrepancy (CVE-2020-14145)

The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts where no host key for the server has been cached by the client. NOTE: some reports...

EUVD-2013-3321

Malware in sbrugna...

EUVD-1999-0827

Malware in sbrugna...

EUVD-2002-0786

Malware in sbrugna...

EUVD-2024-52669

Malicious code in bioql PyPI...

CVE-2025-46807

A flaw was found in sslh. This vulnerability allows an application-level denial of service by exhausting file descriptors via unrestricted connection attempts without limits or throttling. Mitigation Mitigation for this issue is either not available or the currently available options do not meet...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

CVE-2019-9228

An issue was discovered on AudioCodes Mediant 500L-MSBR, 500-MBSR, M800B-MSBR and 800C-MSBR devices with firmware versions F7.20A at least to 7.20A.252.062. The 1 management SSH and 2 management TELNET features allow remote attackers to cause a denial of service connection slot exhaustion via 5...

CVE-2025-21430

CVE-2025-21430 is a Qualcomm WLAN (WLAN Host) vulnerability described as a transient Denial of Service during STA-to-AP connection and ADD TS request to establish a TSpec session. The CVSS 3.1 base score is 7.5 (Network, Low attack complexity, No privileges, No user interaction, Availability impa...

`Endpoint::retry()` calls can lead to panicking

In 0.11.0, we overhauled the server-side Endpoint implementation to enable more careful handling of incoming connection attempts. However, some of the code paths that cleaned up state after connection attempts were processed confused the initial destination connection ID with the destination...

PT-2024-26264 · Quanxun Huiju Network Technology · Ik-Q3000

Name of the Vulnerable Software and Affected Versions: Quanxun Huiju Network TechnologyBeijing Co.,Ltd IK-Q3000 version 3.7.10 Description: The issue allows attackers to cause a Denial of Service DoS when attempting to make TCP connections. Recommendations: For Quanxun Huiju Network...

SUSE CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

Updated openssh packages fix a security vulnerability

The client side in OpenSSH 5.7 through 8.3 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts where no host key for the server has been cached by the client CVE-2020-14145...

CVE-2021-22883

Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file descriptors. If a file descriptor limit is configured on the system, then the server is unabl...

Denial Of Service (DoS)

nodejs is vulnerable to denial of serviceDoS attacks. A remote attacker could cause memory exhaustion via too many connection attempts with an 'unknownProtocol' leading to system unavailability...

CVE-2021-22883

A flaw was found in nodejs. When too many connection attempts with an 'unknownProtocol' are established a leak of file descriptors can occur leading to a potential denial of service. If a file descriptor limit is configured on the system, then the server is unable to accept new connections and...

CVE-2020-14002

PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts where no host key for the server has been cached by the client...

PT-2020-5852 · Node.Js +8 · Node.Js +8

Name of the Vulnerable Software and Affected Versions: Node.js versions prior to 10.24.0 Node.js versions prior to 12.21.0 Node.js versions prior to 14.16.0 Node.js versions prior to 15.10.0 Description: The issue is related to the incorrect handling of a large number of connection attempts with ...

CVE-2019-9600

The Olive Tree FTP Server aka com.theolivetree.ftpserver application through 1.32 for Android allows remote attackers to cause a denial of service via a client that makes many connection attempts and drops certain packets...