CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2025-54939
High (7.5) in litespeedtech. EPSS 0.8% chance of exploitation in the next 30 days.
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.
Severity
- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-401, CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Affected
- litespeedtech:litespeed_web_adc
- litespeedtech:litespeed_web_server
- litespeedtech:lsquic
- litespeedtech:openlitespeed
References
- https://blog.litespeedtech.com/2025/08/18/litespeed-security-update/
- 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/