What is CVE-2018-9271?

CVE-2018-9271 is a high-severity vulnerability in Wireshark, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2018-04-04.

How severe is CVE-2018-9271?

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

Vulnerability in Wireshark

CVE-2018-9271

In Wireshark 2.4.0 to 2.4.5 and 2.2.0 to 2.2.13, epan/dissectors/packet-multipart.c has a memory leak.

Published 2018-04-04 · 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: 0.020 (80.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.020 · change: -0.000

Affected products

Wireshark

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

bugs.wireshark.org/bugzilla/show_bug.cgi (Exploit, Issue Tracking)
code.wireshark.org/review/gitweb
www.wireshark.org/security/wnpa-sec-2018-24.html (Vendor Advisory)

Frequently asked questions

What is CVE-2018-9271?: CVE-2018-9271 is a high-severity vulnerability in Wireshark, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2018-04-04.
How severe is CVE-2018-9271?: High severity. CVSS v3 base score is 7.5 out of 10.