What is CVE-2026-15167?

CVE-2026-15167 is a high-severity vulnerability in Wireshark, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-07-08.

How severe is CVE-2026-15167?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Wireshark

CVE-2026-15167

DBS Etherwatch file parser crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

Vulnerability class: Buffer Overflow

Published 2026-07-08 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (5.9th percentile), scored 2026-10-09.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.9% 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: 0.002 · change: 0.000

Affected products

Wireshark
Wireshark Foundation — versions 4.6.0, 4.4.0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

gitlab.com/wireshark/wireshark/-/work_items/21352 (Exploit, Third Party Advisory, Issue Tracking)
www.wireshark.org/security/wnpa-sec-2026-62.html (Vendor Advisory)

Frequently asked questions

What is CVE-2026-15167?: CVE-2026-15167 is a high-severity vulnerability in Wireshark, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-07-08.
How severe is CVE-2026-15167?: High severity. CVSS v3 base score is 7.5 out of 10.