CVE-2025-24947

MEDIUM

LSQUIC < 4.2.0 - Denial of Service via Hash Collision in Connection ID Hash Table

Title source: llm
STIX 2.1

Description

A hash collision vulnerability (in the hash table used to manage connections) in LSQUIC (aka LiteSpeed QUIC) before 4.2.0 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). This is caused by XXH32 usage.

References (3)

Core 3

Scores

CVSS v3 5.3
EPSS 0.0062
EPSS Percentile 44.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-407
Status published
Products (1)
litespeedtech/LSQUIC < 4.2.0
Published Feb 20, 2025
Tracked Since Feb 18, 2026