What is CVE-2018-5334?

CVE-2018-5334 is a medium-severity vulnerability in Wireshark, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2018-01-11.

How severe is CVE-2018-5334?

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

Buffer overflow in Wireshark

CVE-2018-5334

In Wireshark 2.4.0 to 2.4.3 and 2.2.0 to 2.2.11, the IxVeriWave file parser could crash. This was addressed in wiretap/vwr.c by correcting the signature timestamp bounds checks.

Vulnerability class: Buffer Overflow

Published 2018-01-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: -0.000

Affected products

Wireshark
Debian Linux — versions 7.0, 8.0, 9.0

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

bugs.wireshark.org/bugzilla/show_bug.cgi (Issue Tracking, Vendor Advisory)
lists.debian.org/debian-lts-announce/2018/01/msg00032.html (mailing-list, Mailing List, Third Party Advisory)
code.wireshark.org/review/gitweb
www.securityfocus.com/bid/102499 (VDB Entry, Third Party Advisory, vdb-entry)
www.debian.org/security/2018/dsa-4101 (vendor-advisory, Third Party Advisory)
www.wireshark.org/security/wnpa-sec-2018-03.html (Vendor Advisory)

Frequently asked questions

What is CVE-2018-5334?: CVE-2018-5334 is a medium-severity vulnerability in Wireshark, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2018-01-11.
How severe is CVE-2018-5334?: Medium severity. CVSS v3 base score is 6.5 out of 10.