litespeed web adc vulnerabilities and fixes

Recent CVEs affecting litespeed web adc, with upgrade or downgrade steps. 1 tracked.

Also searched as: litespeedwebadc.

litespeed web adc 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 litespeed web adc 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 litespeed web adc being exploited right now?

None of the tracked litespeed web adc CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which litespeed web adc 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..

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