CVE-2026-15171

SSH protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gitlab.com/wireshark/wireshark/-/work_items/21378	Exploit Issue Tracking Third Party Advisory
https://www.wireshark.org/security/wnpa-sec-2026-55.html	Vendor Advisory
https://gitlab.com/wireshark/wireshark/-/work_items/21378	Exploit Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:wireshark:wireshark::::::::
	cpe:2.3:a:wireshark:wireshark::::::::

History

09 Jul 2026, 19:24

Type	Values Removed	Values Added
CPE		cpe:2.3:a:wireshark:wireshark::::::::
References	~~() https://gitlab.com/wireshark/wireshark/-/work_items/21378 -~~	() https://gitlab.com/wireshark/wireshark/-/work_items/21378 - Exploit, Issue Tracking, Third Party Advisory
References	~~() https://www.wireshark.org/security/wnpa-sec-2026-55.html -~~	() https://www.wireshark.org/security/wnpa-sec-2026-55.html - Vendor Advisory
First Time		Wireshark Wireshark wireshark

09 Jul 2026, 15:16

Type	Values Removed	Values Added
References	~~() https://gitlab.com/wireshark/wireshark/-/work_items/21378 -~~	() https://gitlab.com/wireshark/wireshark/-/work_items/21378 -

08 Jul 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-08 21:16

Updated : 2026-07-09 19:24

NVD link : CVE-2026-15171

Mitre link : CVE-2026-15171

CVE.ORG link : CVE-2026-15171

JSON object : View

Products Affected

wireshark

wireshark

CWE

CWE-476

NULL Pointer Dereference

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