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CVE-2025-23020

Quick assessment

Affected
ptrd Kwik
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kwik是荷兰Peter Doornbosch个人开发者的一个实现QUIC 协议 (RFC 9000) 的客户端和服务器。 Kwik 0.10.1版本之前存在安全漏洞，该漏洞源于包含一个哈希冲突漏洞。远程攻击者利用该漏洞可以通过启动带有冲突源连接ID的连接来在服务器上造成相当大的CPU负载。

CVSS 5.3 · Medium EPSS 0.58% · P46

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-23020

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Kwik before 0.10.1. A hash collision vulnerability (in the hash table used to manage connections) allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
算法复杂性
Source: CVE Program / CVE List V5
Vulnerability Title
Kwik 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kwik是荷兰Peter Doornbosch个人开发者的一个实现QUIC 协议 (RFC 9000) 的客户端和服务器。 Kwik 0.10.1版本之前存在安全漏洞，该漏洞源于包含一个哈希冲突漏洞。远程攻击者利用该漏洞可以通过启动带有冲突源连接ID的连接来在服务器上造成相当大的CPU负载。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ptrd Kwik 0 ~ 0.10.1 -

II. Public POCs for CVE-2025-23020

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III. Intelligence Information for CVE-2025-23020

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Proof of Concept for CVE-2025-23020 (1)

Other References for CVE-2025-23020 (1)

IV. Related Vulnerabilities

Same weakness: CWE-407

V. Comments for CVE-2025-23020

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