What is CVE-2024-25678?

CVE-2024-25678 is a critical-severity vulnerability in Litespeedtech Lsquic, classified under Improper Validation of Integrity Check Value. CVSS score: 9.8/10. Published 2024-02-09.

How severe is CVE-2024-25678?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2024-25678 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Litespeedtech Lsquic

CVE-2024-25678

In LiteSpeed QUIC (LSQUIC) Library before 4.0.4, DCID validation is mishandled.

Published 2024-02-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (26.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Litespeedtech Lsquic

Weakness classification (CWE)

CWE-354 — Improper Validation of Integrity Check Value

Public proof-of-concept exploits

References

www.rfc-editor.org/rfc/rfc9001 (Not Applicable)
github.com/litespeedtech/lsquic/commit/515f453556c99d27c4dddb5424898dc1a5537708 (Patch)
github.com/litespeedtech/lsquic/releases/tag/v4.0.4 (Release Notes)

Frequently asked questions

What is CVE-2024-25678?: CVE-2024-25678 is a critical-severity vulnerability in Litespeedtech Lsquic, classified under Improper Validation of Integrity Check Value. CVSS score: 9.8/10. Published 2024-02-09.
How severe is CVE-2024-25678?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-25678 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.