Vulnerability in OpenBSD

CVE-2025-30334

In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash.

Published · last modified .

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.004 (35.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-30334: held from 0.004 to 0.004.

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

Affected products

  • OpenBSD — versions 7.6, 7.6 errata 008, 7.5

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-30334?
CVE-2025-30334 is a medium-severity vulnerability in OpenBSD, classified under Incorrect Calculation of Buffer Size. CVSS score: 6.5/10. Published 2025-03-20.
How severe is CVE-2025-30334?
Medium severity. CVSS v3 base score is 6.5 out of 10.