PT-2026-36070 · Wireshark Foundation · Wireshark

Sharon Brizinov · Published 2026-04-30 · Updated 2026-04-30 · CVE-2026-6533

NVD

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Dissection engine LZ77 decompression crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

Fix

Weakness Enumeration

CWE-1325

Related Identifiers

CVE-2026-6533

Affected Products

Wireshark

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-6533 · Security Note
• https://gitlab.com/wireshark/wireshark/-/issues/21127 · Note
• https://wireshark.org/security/wnpa-sec-2026-28.html · Note