CVE-2025-54939

MEDIUM LAB

Litespeedtech Litespeed Web Adc < 3.3.1 - Memory Leak

Title source: rule
STIX 2.1

Description

LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.

Exploits (1)

nomisec WORKING POC
by yohannslm · poc
https://github.com/yohannslm/CVE-2025-54939

References (4)

Scores

CVSS v3 5.3
EPSS 0.0018
EPSS Percentile 39.4%
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

Lab Environment

COMMUNITY
Community Lab
docker pull mariadb:11.4
docker pull bitnami/phpmyadmin:5.2.2
docker pull redis:alpine

Details

CWE
CWE-770 CWE-401
Status published
Products (4)
litespeedtech/litespeed_web_adc < 3.3.1
litespeedtech/litespeed_web_server < 6.3.4
litespeedtech/lsquic < 4.3.1
litespeedtech/openlitespeed < 1.8.4
Published Aug 01, 2025
Tracked Since Feb 18, 2026