CVE-2026-5405 Details
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
A heap buffer overflow vulnerability has been identified in the RDP protocol dissector of Wireshark. This issue is present in Wireshark versions 4.6.0 through 4.6.4 and 4.4.0 through 4.4.14. The vulnerability allows for a denial-of-service condition and potentially arbitrary code execution. The issue arises in the uncompressed ZGFX segment path, where attacker-controlled data is copied into a fixed-size buffer without proper bounds checking. This overflow can be exploited by injecting a malformed packet or by convincing a user to open a packet trace file containing the malicious data.
Users are advised to upgrade to Wireshark versions 4.6.5, 4.4.15 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2026:20600 | redhat-SADP | |
| https://access.redhat.com/errata/RHSA-2026:26182 | redhat-SADP | |
| https://access.redhat.com/security/cve/CVE-2026-5405 | redhat-SADP | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2464273 | redhat-SADP | |
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5405.json | redhat-SADP | |
| https://gitlab.com/wireshark/wireshark/-/issues/21105 | [email protected] | ExploitIssue TrackingThird Party Advisory |
| https://www.wireshark.org/security/wnpa-sec-2026-17.html | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | redhat-SADP |
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wireshark wireshark | >= 4.4.0, < 4.4.15 >= 4.6.0, < 4.6.5 |
CPE
Remediation
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Change History
8 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 4, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | Initial Analysis | [email protected] |
| May 1, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | New CVE Received | [email protected] |