CVE-2025-54939
HIGH 7.5EPSS 0.8%
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.
- Affected
- litespeedtech · LSQUIC
- CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS v3.1 MITRE
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS
- 0.80% chance of exploitation in the next 30 days, 56th percentile
- Published
- 2025-08-01
- Updated
- 2025-08-20
Proof-of-concept exploits (1)
- yohannslm/CVE-2025-549391★ · 2025-08-27
Security advisories
- https://blog.litespeedtech.com/2025/08/18/litespeed-security-update
- https://www.imperva.com/blog/quic-leak-cve-2025-54939-new-high-risk-pre-handshake-remote-…
- litespeedtech/lsquic/commit/4cd9252e77fb4a36b572e2167a84067d603d3b23