What is CVE-2024-25679?

CVE-2024-25679 is a medium-severity vulnerability in Pquic, classified under Use of a Key Past its Expiration Date. CVSS score: 6.5/10. Published 2024-02-09.

How severe is CVE-2024-25679?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2024-25679 known to be exploited?

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

Vulnerability in Pquic

CVE-2024-25679

In PQUIC before 5bde5bb, retention of unused initial encryption keys allows attackers to disrupt a connection with a PSK configuration by sending a CONNECTION_CLOSE frame that is encrypted via the initial key computed. Network traffic sniffing is needed as part of exploitation.

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

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L.

EPSS exploit prediction

EPSS: 0.003 (15.5th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Pquic

Weakness classification (CWE)

CWE-324 — Use of a Key Past its Expiration Date

Public proof-of-concept exploits

References

www.rfc-editor.org/rfc/rfc9001 (Not Applicable)
github.com/p-quic/pquic/pull/39 (Patch)
github.com/p-quic/pquic/issues/35 (Issue Tracking)

Frequently asked questions

What is CVE-2024-25679?: CVE-2024-25679 is a medium-severity vulnerability in Pquic, classified under Use of a Key Past its Expiration Date. CVSS score: 6.5/10. Published 2024-02-09.
How severe is CVE-2024-25679?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2024-25679 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.