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CVE-2025-9817

Good to know:

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Date: September 3, 2025

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service

Severity Score

Related Resources (4)

https://gitlab.com/wireshark/wireshark/-/issues/20642
https://nvd.nist.gov/vuln/detail/CVE-2025-9817
https://www.wireshark.org/security/wnpa-sec-2025-03.html
https://www.mend.io/vulnerability-database/CVE-2025-9817

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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Upgrade Version

Upgrade to version https://gitlab.com/wireshark/wireshark.git - v4.4.9;https://gitlab.com/wireshark/wireshark.git - wireshark-4.4.9

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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