CVE-2020-26422

wireshark: QUIC dissector crash (wnpa-sec-2020-20)

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · December 18, 2020

Updated · February 24, 2026

Description

Buffer overflow in QUIC dissector in Wireshark 3.4.0 to 3.4.1 allows denial of service via packet injection or crafted capture file

Statement

This flaw does not affect wireshark as shipped in Red Hat Enterprise Linux 5, 6, 7, or 8 because the affected code was introduced in a more recent version of wireshark than those shipped.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-125 · Out-of-bounds Read