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CVE-2025-24946

Quick assessment

Affected
privateoctopus picoquic
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.

picoquic是Private Octopus开源的一个 QUIC 协议的最小实现。 picoquic存在安全漏洞，该漏洞源于用于管理连接的哈希表使用了弱哈希函数。远程攻击者利用该漏洞可以通过启动具有冲突的源连接ID的连接对服务器造成相当大的CPU负载。

CVSS 5.3 · Medium EPSS 0.55% · P45

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-24946

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing 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
picoquic 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
picoquic是Private Octopus开源的一个 QUIC 协议的最小实现。 picoquic存在安全漏洞，该漏洞源于用于管理连接的哈希表使用了弱哈希函数。远程攻击者利用该漏洞可以通过启动具有冲突的源连接ID的连接对服务器造成相当大的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
privateoctopus picoquic 0 ~ b80fd3f5903279ae3e7714ee4109363d9ab4491a -

II. Public POCs for CVE-2025-24946

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2025-24946

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Patches & Fixes for CVE-2025-24946 (1)

Proof of Concept for CVE-2025-24946 (1)

IV. Related Vulnerabilities

Same weakness: CWE-407

V. Comments for CVE-2025-24946

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