Description
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
Affected products
wireshark: wireshark
References3
- www.wireshark.org/security/wnpa-sec-2026-28.html Vendor Advisory
- gitlab.com/wireshark/wireshark/-/issues/21127 ExploitIssue TrackingThird Party Advisory
- gitlab.com/wireshark/wireshark/-/work_items/21127 ExploitIssue TrackingThird Party Advisory
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 4 · as of 13 November 2026
- CWE
- CWE-1325
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