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NVD Vulnerability Details :

CVE-2025-54939

Analyzed

Source-cve@mitre.org

Published At-01 Aug, 2025 | 06:15

Updated At-27 Aug, 2025 | 15:52

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

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Type	Version	Base score	Base severity	Vector
Secondary	3.1	5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Primary	3.1	7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

litespeedtech>>litespeed_web_adc>>Versions before 3.3.1(exclusive)

litespeedtech>>litespeed_web_server>>Versions before 6.3.4(exclusive)

litespeedtech>>lsquic>>Versions before 4.3.1(exclusive)

litespeedtech>>openlitespeed>>Versions before 1.8.4(exclusive)

CWE ID	Type	Source
CWE-770	Secondary	cve@mitre.org
CWE-401	Primary	nvd@nist.gov

Hyperlink	Source	Resource
https://blog.litespeedtech.com/2025/08/18/litespeed-security-update/	cve@mitre.org	Vendor Advisory
https://github.com/litespeedtech/lsquic/blob/70486141724f85e97b08f510673e29f399bbae8f/CHANGELOG#L1-L3	cve@mitre.org	Release Notes
https://github.com/litespeedtech/lsquic/commit/4cd9252e77fb4a36b572e2167a84067d603d3b23	cve@mitre.org	Release Notes
https://www.imperva.com/blog/quic-leak-cve-2025-54939-new-high-risk-pre-handshake-remote-denial-of-service-in-lsquic-quic-implementation/	cve@mitre.org	Exploit Third Party Advisory