What is CVE-2017-6474?

CVE-2017-6474 is a high-severity vulnerability in Wireshark, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2017-03-04.

How severe is CVE-2017-6474?

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

Vulnerability in Wireshark

CVE-2017-6474

In Wireshark 2.2.0 to 2.2.4 and 2.0.0 to 2.0.10, there is a NetScaler file parser infinite loop, triggered by a malformed capture file. This was addressed in wiretap/netscaler.c by validating record sizes.

Published 2017-03-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.030 (86.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.030 · change: +0.001

Affected products

Wireshark
Debian Linux — versions 8.0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

bugs.wireshark.org/bugzilla/show_bug.cgi (Patch, Issue Tracking, Vendor Advisory)
www.wireshark.org/security/wnpa-sec-2017-07.html (Vendor Advisory)
www.debian.org/security/2017/dsa-3811 (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/96566 (VDB Entry, Third Party Advisory, vdb-entry)
code.wireshark.org/review/gitweb

Frequently asked questions

What is CVE-2017-6474?: CVE-2017-6474 is a high-severity vulnerability in Wireshark, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2017-03-04.
How severe is CVE-2017-6474?: High severity. CVSS v3 base score is 7.5 out of 10.