CVE-2025-54939
HIGHCVSS 7.5/10EPSS 0.77%
Last modified
CVE-2025-54939 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.. EPSS estimates a 0.77% chance of exploitation in the next 30 days.
Description
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Litespeedtech | Litespeed Web Adc | < 3.3.1 |
| Litespeedtech | Litespeed Web Server | < 6.3.4 |
| Litespeedtech | Lsquic | < 4.3.1 |
| Litespeedtech | Openlitespeed | < 1.8.4 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-54939?
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.
How severe is CVE-2025-54939?
CVE-2025-54939 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.
How do I fix CVE-2025-54939?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2025-54939?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST