PatchTheCVElsquic vulnerabilities and fixes
Recent CVEs affecting lsquic, with upgrade or downgrade steps. 1 tracked.
lsquic has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2025-08-01. Highest priority: CVE-2025-54939 (score 43/100).
- CVE-2025-54939 MEDIUM 5.3 UPGRADE UPGRADE LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.
FAQ
How do I fix lsquic vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is lsquic being exploited right now?
None of the tracked lsquic CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which lsquic CVE should I patch first?
CVE-2025-54939 currently ranks highest (43/100): LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak..