What is CVE-2018-7320?

CVE-2018-7320 is a high-severity vulnerability in Wireshark. CVSS score: 7.5/10. Published 2018-02-23.

How severe is CVE-2018-7320?

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

Vulnerability in Wireshark

CVE-2018-7320

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

Published 2018-02-23 · 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: 0.026 (84.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

Wireshark
Debian Linux — versions 8.0, 9.0

References

bugs.wireshark.org/bugzilla/show_bug.cgi (Issue Tracking, Vendor Advisory)
code.wireshark.org/review/gitweb
www.debian.org/security/2018/dsa-4217 (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/103160 (VDB Entry, Third Party Advisory, vdb-entry)
www.wireshark.org/security/wnpa-sec-2018-10.html (Vendor Advisory)

Frequently asked questions

What is CVE-2018-7320?: CVE-2018-7320 is a high-severity vulnerability in Wireshark. CVSS score: 7.5/10. Published 2018-02-23.
How severe is CVE-2018-7320?: High severity. CVSS v3 base score is 7.5 out of 10.