CVE-2025-9817 Details
Description
SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service
A denial-of-service vulnerability has been identified in the Wireshark SSH dissector, present in versions 4.4.0 through 4.4.8. This issue allows Wireshark to crash when it processes a malformed packet, either injected onto the network or contained within a packet trace file.
Users are advised to upgrade to Wireshark version 4.4.9 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 Sep 4, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gitlab.com/wireshark/wireshark/-/issues/20642 | [email protected] | Issue Tracking |
| https://www.wireshark.org/security/wnpa-sec-2025-03.html | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wireshark wireshark | >= 4.4.0, <= 4.4.8 4.4.9 rc0 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 26, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Dec 5, 2025 | Reanalysis | [email protected] |
| Oct 9, 2025 | Initial Analysis | [email protected] |
| Sep 3, 2025 | New CVE Received | [email protected] |