What is CVE-2026-3201?

CVE-2026-3201 is a medium-severity vulnerability in Wireshark, classified under CWE-1325. CVSS score: 4.7/10. Published 2026-02-25.

How severe is CVE-2026-3201?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Resource exhaustion in Wireshark

CVE-2026-3201

USB HID protocol dissector memory exhaustion in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service

Published 2026-02-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (19.1th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Wireshark
Wireshark Foundation — versions 4.6.0, 4.4.0

Weakness classification (CWE)

References

www.wireshark.org/security/wnpa-sec-2026-05.html (Vendor Advisory)
gitlab.com/wireshark/wireshark/-/issues/20972 (issue-tracking, Exploit, permissions-required, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2026-3201?: CVE-2026-3201 is a medium-severity vulnerability in Wireshark, classified under CWE-1325. CVSS score: 4.7/10. Published 2026-02-25.
How severe is CVE-2026-3201?: Medium severity. CVSS v3 base score is 4.7 out of 10.