Description
RDP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code execution
Affected products
wireshark: wireshark
References7
- www.wireshark.org/security/wnpa-sec-2026-17.html Vendor Advisory
- gitlab.com/wireshark/wireshark/-/issues/21105 ExploitIssue TrackingThird Party Advisory
- access.redhat.com/errata/RHSA-2026:20600
- access.redhat.com/errata/RHSA-2026:26182
- access.redhat.com/security/cve/CVE-2026-5405
- bugzilla.redhat.com/show_bug.cgi?id=2464273
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5405.…
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 13 November 2026
- CWE
- CWE-122CWE-787
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.