CVE-2026-6533

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

Score

CVSS 3.1 5.5 Medium

Status

Analyzed - cve@gitlab.com

Published

2026-04-30

Last modified

2026-10-26

Weaknesses

CWE-1325

Affected products

• Wireshark (Wireshark)
• Wireshark (Wireshark Foundation)

References

• https://www.wireshark.org/security/wnpa-sec-2026-28.html
• https://gitlab.com/wireshark/wireshark/-/issues/21127
• https://gitlab.com/wireshark/wireshark/-/work_items/21127