Back to Database
Status published
Medium
CVE-2025-54939
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory...
Vulnerability Description
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-54939
Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/litespeedtech/lsquic/blob/70486141724f85e97b08f510673e29f399bbae8f/CHANGELOG#L1-L3
- https://github.com/litespeedtech/lsquic/commit/4cd9252e77fb4a36b572e2167a84067d603d3b23
- https://www.imperva.com/blog/quic-leak-cve-2025-54939-new-high-risk-pre-handshake-remote-denial-of-service-in-lsquic-quic-implementation/
- https://blog.litespeedtech.com/2025/08/18/litespeed-security-update/
More from litespeedtech
View All →CVE-2025-24947
A hash collision vulnerability (in the hash table used to...
Medium
5.3
CVE-2025-12450
LiteSpeed Cache <= 7.5.0.1 - Reflected Cross-Site Scripting
Medium
6.1
CVE-2024-9169
litespeed cache <= 6.4.1 - Authenticated (Administrator+) Stored Cross-Site Scripting
Medium
5.5
CVE-2024-3246
LiteSpeed Cache <= 6.2.0.1 - Cross-Site Request Forgery to Stored Cross-Site Scripting
Medium
6.1
CVE-2023-4372
LiteSpeed Cache <= 5.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Medium
6.4
Affected Vendor
litespeedtech
View all reports →Affected Software
LSQUIC
Vulnerable Versions:
0
Timeline
Official Publish:
August 1st, 2025
Last Modified:
August 20th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L